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  • Stop Saying "Multi-Channel!"

    - by David Dorf
    I keep hearing the term "multi-channel" in our industry, but its time to move on. It kinda reminds me of the term "ECR" or electronic cash register. Long ago ECR was a leading-edge term, but nowadays its rarely used because its table-stakes. After all, what cash register today isn't electronic? The same logic applies to multi-channel, at least when we're talking about tier-1 and tier-2 retailers. If you're still talking about multi-channel retailing, you're in big trouble. Some have switched over to the term "cross-channel," and that's a step in the right direction but still falls short. Its kinda like saying, "I upgraded my ECR to accept debit cards!" Yawn. Who hasn't? Today's retailers need to focus on omni-channel, which I first heard from my friends over at RSR but was originally coined at IDC. First retailers added e-commerce to their store and catalog channels yielding multi-channel retailing. Consumers could use the channel that worked best for them. Then some consumers wanted to combine channels with features like buy-on-the-Web, pickup-in-the-store. Thus began the cross-channel initiatives to breakdown the silos and enable the channels to communicate with each other. But the multi-channel architecture is full of duplication that thwarts efforts of providing a consistent experience. Each has its own cart, its own pricing, and often its own CRM. This was an outcrop of trying to bring the independent channels to market quickly. Rather than reusing and rebuilding existing components to meet the new demands, silos were created that continue to exist today. Today's consumers want omni-channel retailing. They want to interact with brands in a consistent manner that is channel transparent, yet optimized for that particular interaction. The diagram below, from the soon-to-be-released NRF Mobile Blueprint v2, shows this progression. For retailers to provide an omni-channel experience, there needs to be one logical representation of products, prices, promotions, and customers across all channels. The only thing that varies is the presentation of the content based on the delivery mechanism (e.g. shelf labels, mobile phone, web site, print, etc.) and often these mechanisms can be combined in various ways. I'm looking forward to the day in which I can use my phone to scan QR-codes in a catalog to create a shopping cart of items. Then do some further research on the retailer's Web site and be told about related items that might interest me. Be able to easily solicit opinions and reviews from social sites, and finally enter the store to pickup my items, knowing that any applicable coupons have been applied. In this scenario, I the consumer are dealing with a single brand that is aware of me and my needs throughout the entire transaction. Nirvana.

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  • Bad idea to keep htop running?

    - by Michael T. Smith
    I'm now monitoring multiple servers (3) and in the coming weeks that'll increase (towards 5 or 6). I've been keeping three terminal windows open running htop via SSH and I'm now wondering if there are any downsides to having a connection constantly open to production servers?

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  • Five Key Strategies in Master Data Management

    - by david.butler(at)oracle.com
    Here is a very interesting Profit Magazine article on MDM: A recent customer survey reveals the deleterious effects of data fragmentation. by Trevor Naidoo, December 2010   Across industries and geographies, IT organizations have grown in complexity, whether due to mergers and acquisitions, or decentralized systems supporting functional or departmental requirements. With systems architected over time to support unique, one-off process needs, they are becoming costly to maintain, and the Internet has only further added to the complexity. Data fragmentation has become a key inhibitor in delivering flexible, user-friendly systems. The Oracle Insight team conducted a survey assessing customers' master data management (MDM) capabilities over the past two years to get a sense of where they are in terms of their capabilities. The responses, by 27 respondents from six different industries, reveal five key areas in which customers need to improve their data management in order to get better financial results. 1. Less than 15 percent of organizations surveyed understand the sources and quality of their master data, and have a roadmap to address missing data domains. Examples of the types of master data domains referred to are customer, supplier, product, financial and site. Many organizations have multiple sources of master data with varying degrees of data quality in each source -- customer data stored in the customer relationship management system is inconsistent with customer data stored in the order management system. Imagine not knowing how many places you stored your customer information, and whether a customer's address was the most up to date in each source. In fact, more than 55 percent of the respondents in the survey manage their data quality on an ad-hoc basis. It is important for organizations to document their inventory of data sources and then profile these data sources to ensure that there is a consistent definition of key data entities throughout the organization. Some questions to ask are: How do we define a customer? What is a product? How do we define a site? The goal is to strive for one common repository for master data that acts as a cross reference for all other sources and ensures consistent, high-quality master data throughout the organization. 2. Only 18 percent of respondents have an enterprise data management strategy to ensure that data is treated as an asset to the organization. Most respondents handle data at the department or functional level and do not have an enterprise view of their master data. The sales department may track all their interactions with customers as they move through the sales cycle, the service department is tracking their interactions with the same customers independently, and the finance department also has a different perspective on the same customer. The salesperson may not be aware that the customer she is trying to sell to is experiencing issues with existing products purchased, or that the customer is behind on previous invoices. The lack of a data strategy makes it difficult for business users to turn data into information via reports. Without the key building blocks in place, it is difficult to create key linkages between customer, product, site, supplier and financial data. These linkages make it possible to understand patterns. A well-defined data management strategy is aligned to the business strategy and helps create the governance needed to ensure that data stewardship is in place and data integrity is intact. 3. Almost 60 percent of respondents have no strategy to integrate data across operational applications. Many respondents have several disparate sources of data with no strategy to keep them in sync with each other. Even though there is no clear strategy to integrate the data (see #2 above), the data needs to be synced and cross-referenced to keep the business processes running. About 55 percent of respondents said they perform this integration on an ad hoc basis, and in many cases, it is done manually with the help of Microsoft Excel spreadsheets. For example, a salesperson needs a report on global sales for a specific product, but the product has different product numbers in different countries. Typically, an analyst will pull all the data into Excel, manually create a cross reference for that product, and then aggregate the sales. The exact same procedure has to be followed if the same report is needed the following month. A well-defined consolidation strategy will ensure that a central cross-reference is maintained with updates in any one application being propagated to all the other systems, so that data is synchronized and up to date. This can be done in real time or in batch mode using integration technology. 4. Approximately 50 percent of respondents spend manual efforts cleansing and normalizing data. Information stored in various systems usually follows different standards and formats, making it difficult to match the data. A customer's address can be stored in different ways using a variety of abbreviations -- for example, "av" or "ave" for avenue. Similarly, a product's attributes can be stored in a number of different ways; for example, a size attribute can be stored in inches and can also be entered as "'' ". These types of variations make it difficult to match up data from different sources. Today, most customers rely on manual, heroic efforts to match, cleanse, and de-duplicate data -- clearly not a scalable, sustainable model. To solve this challenge, organizations need the ability to standardize data for customers, products, sites, suppliers and financial accounts; however, less than 10 percent of respondents have technology in place to automatically resolve duplicates. It is no wonder, therefore, that we get communications about products we don't own, at addresses we don't reside, and using channels (like direct mail) we don't like. An all-too-common example of a potential challenge follows: Customers end up receiving duplicate communications, which not only impacts customer satisfaction, but also incurs additional mailing costs. Cleansing, normalizing, and standardizing data will help address most of these issues. 5. Only 10 percent of respondents have the ability to share data that was mastered in a master data hub. Close to 60 percent of respondents have efforts in place that profile, standardize and cleanse data manually, and the output of these efforts are stored in spreadsheets in various parts of the organization. This valuable information is not easily shared with the rest of the organization and, more importantly, this enriched information cannot be sent back to the source systems so that the data is fixed at the source. A key benefit of a master data management strategy is not only to clean the data, but to also share the data back to the source systems as well as other systems that need the information. Aside from the source systems, another key beneficiary of this data is the business intelligence system. Having clean master data as input to business intelligence systems provides more accurate and enhanced reporting.  Characteristics of Stellar MDM When deciding on the right master data management technology, organizations should look for solutions that have four main characteristics: enterprise-grade MDM performance complete technology that can be rapidly deployed and addresses multiple business issues end-to-end MDM process management with data quality monitoring and assurance pre-built MDM business relevant applications with data stores and workflows These master data management capabilities will aid in moving closer to a best-practice maturity level, delivering tremendous efficiencies and savings as well as revenue growth opportunities as a result of better understanding your customers.  Trevor Naidoo is a senior director in Industry Strategy and Insight at Oracle. 

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  • no such partition, grub rescue

    - by David
    I am currently dual booting Win7 and Ubuntu. I created a new partition, on my c drive, to install windows 8 on (i did not want to do the upgrade). I inserted the windows 8 cd and restarted my computer. no such partition/ grub rescue is all that comes up now. I loaded ubuntu from disk and did boot-repair. It did not solve my problem but I got the following output Please let me know if anyone can fix this. I am lost.

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  • Secure openVPN using IPTABLES

    - by bob franklin smith harriet
    Hey, I setup an openVPN server and it works ok. The next step is to secure it, I opted to use IPTABLES to only allow certain connections through but so far it is not working. I want to enable access to the network behind my openVPN server, and allow other services (web access), when iptables is disabaled or set to allow all this works fine, when using my following rules it does not. also note, I already configured openVPN itself to do what i want and it works fine, its only failing when iptables is started. Any help to tell me why this isnt working will appreciated here. These are the lines that I added in accordance with openVPN's recommendations, unfortunately testing these commands shows that they are requiered, they seem incredibly insecure though, any way to get around using them? # Allow TUN interface connections to OpenVPN server -A INPUT -i tun+ -j ACCEPT #allow TUN interface connections to be forwarded through other interfaces -A FORWARD -i tun+ -j ACCEPT # Allow TAP interface connections to OpenVPN server -A INPUT -i tap+ -j ACCEPT # Allow TAP interface connections to be forwarded through other interfaces -A FORWARD -i tap+ -j ACCEPT These are the new chains and commands i added to restrict access as much as possible unfortunately with these enabled, all that happens is the openVPN connection establishes fine, and then there is no access to the rest of the network behind the openVPN server note I am configuring the main iptables file and I am paranoid so all ports and ip addresses are altered, and -N etc appears before this so ignore that they dont appear. and i added some explanations of what i 'intended' these rules to do, so you dont waste time figuring out where i went wrong : 4 #accepts the vpn over port 1192 -A INPUT -p udp -m udp --dport 1192 -j ACCEPT -A INPUT -j INPUT-FIREWALL -A OUTPUT -j ACCEPT #packets that are to be forwarded from 10.10.1.0 network (all open vpn clients) to the internal network (192.168.5.0) jump to [sic]foward-firewall chain -A FORWARD -s 10.10.1.0/24 -d 192.168.5.0/24 -j FOWARD-FIREWALL #same as above, except for a different internal network -A FORWARD -s 10.10.1.0/24 -d 10.100.5.0/24 -j FOWARD-FIREWALL # reject any not from either of those two ranges -A FORWARD -j REJECT -A INPUT-FIREWALL -m state --state RELATED,ESTABLISHED -j ACCEPT -A INPUT-FIREWALL -p tcp -m tcp --dport 22 -j ACCEPT -A INPUT-FIREWALL -j REJECT -A FOWARD-FIREWALL -m state --state RELATED,ESTABLISHED -j ACCEPT #80 443 and 53 are accepted -A FOWARD-FIREWALL -m tcp -p tcp --dport 80 -j ACCEPT -A FOWARD-FIREWALL -m tcp -p tcp --dport 443 -j ACCEPT #192.168.5.150 = openVPN sever -A FOWARD-FIREWALL -m tcp -p tcp -d 192.168.5.150 --dport 53 -j ACCEPT -A FOWARD-FIREWALL -m udp -p udp -d 192.168.5.150 --dport 53 -j ACCEPT -A FOWARD-FIREWALL -j REJECT COMMIT now I wait :D

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  • Software Life-cycle of Hacking

    - by David Kaczynski
    At my local university, there is a small student computing club of about 20 students. The club has several small teams with specific areas of focus, such as mobile development, robotics, game development, and hacking / security. I am introducing some basic agile development concepts to a couple of the teams, such as user stories, estimating complexity of tasks, and continuous integration for version control and automated builds/testing. I am familiar with some basic development life-cycles, such as waterfall, spiral, RUP, agile, etc., but I am wondering if there is such a thing as a software development life-cycle for hacking / breaching security. Surely, hackers are writing computer code, but what is the life-cycle of that code? I don't think that they would be too concerned with maintenance, as once the breach has been found and patched, the code that exploited that breach is useless. I imagine the life-cycle would be something like: Find gap in security Exploit gap in security Procure payload Utilize payload I propose the following questions: What kind of formal definitions (if any) are there for the development life-cycle of software when the purpose of the product is to breach security?

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  • State / Screen management in Entity Component Systems

    - by David Lively
    My entity/component system is happily humming along and, despite some performance concerns I initially had, everything is working fine. However, I've realized that I missed a crucial point when starting this thing: how do you handle different screens? At the moment, I have a GameManager class which owns a component manager and entity manager. When I create an entity, the entity manager assigns it an ID and makes sure it's tracked. When I modify the components that are assigned to an entity. an UpdateEntity method is called, which alerts each of the systems that they may need to add or remove the entity from their respective entity lists. A problem with this is that the collection of entities operated on by each system is determined solely by the individual Systems, typically based on a "required component" filter. (An entity has to have a Renderable component to be rendered, for instance.) In this situation, I can't just keep collections of entities per screen and only Update/Draw those collections. They'd have to either be added and removed depending on their applicability to the current screen, which would cause their associated components to be removed, or enable/disable entities in a group per screen to hide what's not supposed to be visible. These approaches seem like really, really crappy kludges. What's a good way to handle this? A pretty straightforward way that comes to mind is to create a separate GameManager (which in my implementation owns all of the systems, entities, etc.) per screen, which means that everything outside of the device context would be duplicated. That's bothersome because some things are always visible, or I might want to continue to display the game under a translucent menu window. Another option would be to add a "layer" key to the GameManager class, which could be checked against a displayable layer stack held by the game manager. *System.Draw() would be called for each active layer, in the required order as determined by the stack. When the systems request an iterator for their respective entity collections, it would be pre-filtered to a (cached) set of those entities that participate in the active layer. Those collections could be updated from the same UpdateEntity event that's already used to maintain each system's entity collections. Still, kinda feels like a hack. If I've coded myself into a corner, feel free to throw tomatoes as long as they're labeled with a helpful suggestion. Hooray for learning curves.

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  • How to approach big developer companies if I have a killer game idea? (for mobile devices)

    - by Balázs Dávid
    I have an idea for a game that has a potential, but I'm not a programmer. How to tell this to development companies without being my idea stolen? All I want from the company is first to watch a 3-minute long video presentation about my idea and if they see fantasy in it then we can talk about the details. I have already sent an e-mail to several big companies that have the expertise needed to code the game, they haven't answer me. Actually the idea is nothing fancy, no 3D, but fun and unique.

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  • Reviewing Retail Predictions for 2011

    - by David Dorf
    Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} I've been busy thinking about what 2012 and beyond will look like for retail, and I have some interesting predictions to share.  But before I go there, let’s first review this year’s predictions before making new ones for 2012. 1. Alternate Payments We've seen several alternate payment schemes emerge over the last two years, and 2011 may be the year one of them takes hold. Any competition that can drive down fees will be good for everyone. I'm betting that Apple will add NFC chips to their next version of the iPhone, then enable payments in stores using iTunes accounts on the backend. Paypal will continue to make inroads, and Isis will announce a pilot. The iPhone 4S did not contain an NFC chip, so we’ll have to continuing waiting for the iPhone 5. PayPal announced its moving into in-store payments, and Google launched its wallet in selected cities.  Overall I think the payment scene is heating up and that trend will continue. 2. Engineered Systems The industry is moving toward purpose-built appliances that are optimized across the entire stack. Oracle calls these "engineered systems" and the first two examples are Exadata and Exalogic, but there are other examples from other vendors. These are particularly important to the retail industry because of the volume of data that must be processed. There should be continued adoption in 2011. Oracle reports that Exadata is its fasting growing product, and at the recent OpenWorld it announced the SuperCluster and Exalytics products, both continuing the engineered systems trend. SAP’s HANA continues to receive attention, and IBM also seems to be moving in this direction. 3. Social Analytics There are lots of tools that provide insight into how a brand is perceived across popular internet sites, but as far as I know, these tools are not industry specific. The next step needs to mine the data and determine how it should influence retail operations. The data needs to help retailers determine how they create promotions, which products to stock, and how to keep consumers engaged. Social data alone does not provide the answers, but its one more data point that will help retailers make better decisions. Look for some vendor consolidation to help make this happen. In March, Salesforce.com acquired leading social monitoring vendor Radian6 and followed up with acquisitions of Heroku and Model Metrics. The notion of Social CRM seems to be going more mainstream now. 4. 2-D Barcodes Look for more QRCodes on shelf-tags, in newspaper circulars, and on billboards. It's a great portal from the physical world into the digital one that buys us time until augmented reality matures further. Nobody wants to type "www", backslash, and ".com" on their phones. QRCodes are everywhere. ‘Nuff said. 5. In the words of Microsoft, "To the Cloud!" My favorite "cloud application" is Evernote. If you take notes on your work laptop, you will inevitably need those notes on your home PC. And if you manage to solve that problem, you'll need to access them from your mobile phone. Evernote stores your notes in the cloud and provides easy ways to access them. Being able to access a service from anywhere and not having to worry about backups, upgrades, etc. is great. Retailers will start to rely on cloud services, both public and private, in the coming year. There were no shortage of announcements in this area: Amazon’s cloud-based Kindle Fire, Apple’s iCloud, Oracle’s Public Cloud, etc. I saw an interesting presentation showing how BevMo moved their systems to the cloud.  Seems like retailers are starting to consider the cloud for specific uses. 6. F-CommerceTop of Form Move over "E" and "M" so we can introduce "F-Commerce," which should go mainstream in 2011. Already several retailers have created small stores on Facebook, and it won't be long before Facebook becomes a full-fledged channel in the omni-channel world of retail. The battle between Facebook and Google will heat up over retail, where both stand to make lots of money. JCPenney and ASOS both put their entire catalogs on Facebook, and lots of other retailers have connected Facebook to their e-commerce site. I still think selling from the newsfeed is the best approach, and several retailers are trying that approach as well. I just don’t see Google+ as a threat to Facebook, so I think that battle is over.  I called 2011 The Year of F-Commerce, and that was probably accurate. Its good to look back at predictions, but we also have to think about what was missed.  I didn't see Amazon entering the tablet business with such a splash, although in hindsight it was obvious. Nor did I think HP would fall so far so fast.  Look for my 2012 predictions coming soon.

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  • Recommended installation for Asus EEE 1015PEM Netbook

    - by David B
    Hi, I just got my Asus EEE PC 1015PEM netbook with Windows 7 starter... obviously, I'd like to install Ubuntu (not sure yet if I'd like to dual boot or completely remove win7). Anyway, I never had a netbook before. I know about unity but heard some bad stuff about it, so I wonder if I might be better sticking to the desktop edition. What do you think? any recommendations? Also, should I use the 32 bit or 64 bit version?

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  • 2-D Codes in Retail

    - by David Dorf
    The UPC you find on packaging is a one-dimensional barcode that's been in use, in one form or another, since the 1970s. While its a good symbology to encode numbers like a product identifier, its not really big enough to hold much more. It also requires a barcode scanner (like those connected to the POS), although iPhone apps like RedLaser have proved a mobile camera can be made to work in many situations. The next generation barcodes are two-dimensional and therefore capable of holding much more information as well as being more conducive to cameras. The most popular format is the QR Code, widely used in Japan because almost every mobile phone has a built-in reader. A typical use for QR Codes is to embed a URL so that that a mobile phone can quickly navigate to the specified web page. QR Codes can be found on posters, billboards, catalogs, and circulars. Speaking of which, Best Buy recently put a QR code in their circular as shown below. If fact, they even updated their iPhone application to include a QR Code reader. I was able to scan the barcode above right from the screen with my iPhone without issues, even though its fairly small in this image. Clearly they are planning to incorporate more QR Codes in their stores and advertising. If you haven't seen QR Codes before, you're not looking hard enough. They are around and will continue to spread.

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  • Mobile and Social for Retail

    - by David Dorf
    I've got two speaking gigs in the next few weeks, so I thought I'd preview both here. First I'll be at eTail West on February 24th to talk about mobile. I'll be previewing a new study of how shoppers are using mobile phones. Here's a sneak peek at one of the slides: It should be no surprise that as more consumers adopt smartphones, more are finding ways to use them to help with shopping. Sometimes that's to find a store, download a coupon, or do price comparisons. I'll also be discussing the NRF Mobile Blueprint, and will walk through an example of mobile impacting the in-store experience. Retailers need to look upon mobile as the method of bringing the digital assets of e-commerce into the aisles to enhance shopping. On March 9th I'll be at NRF Innovate co-presenting with Jon Kubo of Wet Seal on social strategies. Jon is a retail innovation rock-star and I always learn something new from every conversation with him. Below is a another slide preview: I cheated a little on the top 10 most popular retailer pages by not including Victoria's Secret Pink. VC is already represented, so I didn't include them a second time. The most interesting statistic I found was that the average user spends 55 minutes on Facebook a day. Wow! I also decided to use the old "Like" and "Fan" icons just because I like them better (pun intended). Wet Seal has been collecting interesting statistics on liked products, so I hope Jon will share lots (I'm on a roll). Hope to see you at both events.

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  • Used DBAN to wipe Lenovo u410 then installed Ubuntu. Need to install windows 8, but I get an error.

    - by David
    When I try to boot from my windows 8 USB (tested on a separate PC), I get this error text "The boot configuration data for your pc is missing or contains errors." I want to install windows again so I can fix a battery issue I'm having. Lenovo's power management app has an option to keep the battery at 60% if the laptop stays plugged in most of the time. I enabled this, then formatted without changing it back. I think there might be a raid setup that I may need to remove or something. I don't mind removing Ubuntu and starting fresh. I would just love some help with all this, I'm a noob when it comes to Linux.

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  • 2011 - ALMs for your development team and the people they work with.

    - by David V. Corbin
    Welcome to 2011, it is already shaping up to be a very exciting year. The title of the post is not about charitable giving, although that is also a great topic. Application Lifecycle Management and the Systems that support the environment is, and 2011 will be a year where I expect many teams to invest heavily in this area. For those not familiar with ALM, it can be simplified down to "A comprehensive view of all of the iteas, requirements, activities and artifacts that impact an application over the course of its lifecycle, from concept until decommissioning". Obviously, this encompases a large number of different areas even for relatively small and medium sized projects. In recent years, many teams have adapted methodoligies which address individual aspects of this; but the majority of this adoption has resulted in "islands of improvement" rather than the desired comprehensive outcome...Until now! Last year Microsoft released Team Foundation Server 2010 along with Visual Studio 2010 Ultimate Edition, and with these two in combination the situation has drastically changed. At last there is a single environment that is capable of handling all aspects of ALM, and is also capable of dealing with migration and integration with existing systems to make the transition to a single solution much easier. Thse possibilities (and practicalities) are nothing short of amazing, Architecture thru Testing integration? YES. Being able to correlate specific requirement items (and their history) to actual code (and code history)? YES. Identification of which tests will be potentially impacted by a given code change? YES. Resiliant Automated Testing of User Interfaces? YES. Automatic Deployment Management? YES. Integraton Level testing as part of (designated) Builds? YES. I could easily double or triple the above list, but these items should be enough to get you thinking about the "pain points" your team and organization currently face and the fact that there IS a way to relieve the pain. Over the course of the year, I am hoping to bring together some of the "best of breed" information, along with hosting (and participating in) discussions with various experts in the field. There are already a number of groups (including many on LinkedIn) that have an ALM focus, and I encourage everyone out to check them out. I will be posting a list of the ones I find most helpful in the not too distant future. As I said at the beginning, 2011 is shaping up to be a very interesting (and productive) year. Why wait to start investigating and adopting ALM? ps: For those interested in becoming an "Alms Giver" in the charitable sense, I highly recommend checking out GiveCamp. A group of developers, designers and others get together to create a solution for a charity in just under 48 hours. I will be attending the GiveCamp in New York City on Jan 14-16, more information is available at nycgivecamp.org/

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  • Finding Database issue for iphone app

    - by David Liu
    I know this is a dumb question and it might not be "conceptual" but, as a self-starter I really want to know how to get connected to some sort of "commercial database"? I'm recently designing my local gas station utility app for iphone and ipad. I have absolutely no clue of find a relevant database. For example, if I want to make an app for pizza ordering in the great Chicago area. How do I get info (price, menu, location, etc.) of those pizza stores scattered all over Chicago? Can any one light something for me? I appreciated your help. **If this question is not suitable here please tell me and I will delete this post. Thank you.

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  • what's the point of method overloading?

    - by David
    I am following a textbook in which I have just come across method overloading. It briefly described method overloading as: when the same method name is used with different parameters its called method overloading. From what I've learned so far in OOP is that if I want different behaviors from an object via methods, I should use different method names that best indicate the behavior, so why should I bother with method overloading in the first place?

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  • Turning Supply Data Into Savings- (Almost) Everything You Need to Know in 12 Minutes

    - by David Hope-Ross
    Strategic sourcing and supplier management analytics are easy. The hard part is getting reliable data that provide an accurate record of suppliers, spend, invoices, expenses, and so on. In this new AppsCast, e-Three’s Amy Joshi provides an extraordinarily cogent explanation of key challenges, technologies, and tactics for improving spend visibility. Take twelve minutes to listen and learn. The techniques that Amy outlines can add millions to your organization’s bottom line.

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  • Xml Serialization and the [Obsolete] Attribute

    - by PSteele
    I learned something new today: Starting with .NET 3.5, the XmlSerializer no longer serializes properties that are marked with the Obsolete attribute.  I can’t say that I really agree with this.  Marking something Obsolete is supposed to be something for a developer to deal with in source code.  Once an object is serialized to XML, it becomes data.  I think using the Obsolete attribute as both a compiler flag as well as controlling XML serialization is a bad idea. In this post, I’ll show you how I ran into this and how I got around it. The Setup Let’s start with some make-believe code to demonstrate the issue.  We have a simple data class for storing some information.  We use XML serialization to read and write the data: public class MyData { public int Age { get; set; } public string FirstName { get; set; } public string LastName { get; set; } public List<String> Hobbies { get; set; }   public MyData() { this.Hobbies = new List<string>(); } } Now a few simple lines of code to serialize it to XML: static void Main(string[] args) { var data = new MyData {    FirstName = "Zachary", LastName = "Smith", Age = 50, Hobbies = {"Mischief", "Sabotage"}, }; var serializer = new XmlSerializer(typeof (MyData)); serializer.Serialize(Console.Out, data); Console.ReadKey(); } And this is what we see on the console: <?xml version="1.0" encoding="IBM437"?> <MyData xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <Age>50</Age> <FirstName>Zachary</FirstName> <LastName>Smith</LastName> <Hobbies> <string>Mischief</string> <string>Sabotage</string> </Hobbies> </MyData>   The Change So we decided to track the hobbies as a list of strings.  As always, things change and we have more information we need to store per-hobby.  We create a custom “Hobby” object, add a List<Hobby> to our MyData class and we obsolete the old “Hobbies” list to let developers know they shouldn’t use it going forward: public class Hobby { public string Name { get; set; } public int Frequency { get; set; } public int TimesCaught { get; set; }   public override string ToString() { return this.Name; } } public class MyData { public int Age { get; set; } public string FirstName { get; set; } public string LastName { get; set; } [Obsolete("Use HobbyData collection instead.")] public List<String> Hobbies { get; set; } public List<Hobby> HobbyData { get; set; }   public MyData() { this.Hobbies = new List<string>(); this.HobbyData = new List<Hobby>(); } } Here’s the kicker: This serialization is done in another application.  The consumers of the XML will be older clients (clients that expect only a “Hobbies” collection) as well as newer clients (that support the new “HobbyData” collection).  This really shouldn’t be a problem – the obsolete attribute is metadata for .NET compilers.  Unfortunately, the XmlSerializer also looks at the compiler attribute to determine what items to serialize/deserialize.  Here’s an example of our problem: static void Main(string[] args) { var xml = @"<?xml version=""1.0"" encoding=""IBM437""?> <MyData xmlns:xsi=""http://www.w3.org/2001/XMLSchema-instance"" xmlns:xsd=""http://www.w3.org/2001/XMLSchema""> <Age>50</Age> <FirstName>Zachary</FirstName> <LastName>Smith</LastName> <Hobbies> <string>Mischief</string> <string>Sabotage</string> </Hobbies> </MyData>"; var serializer = new XmlSerializer(typeof(MyData)); var stream = new StringReader(xml); var data = (MyData) serializer.Deserialize(stream);   if( data.Hobbies.Count != 2) { throw new ApplicationException("Hobbies did not deserialize properly"); } } If you run the code above, you’ll hit the exception.  Even though the XML contains a “<Hobbies>” node, the obsolete attribute prevents the node from being processed.  This will break old clients that use the new library, but don’t yet access the HobbyData collection. The Fix This fix (in this case), isn’t too painful.  The XmlSerializer exposes events for times when it runs into items (Elements, Attributes, Nodes, etc…) it doesn’t know what to do with.  We can hook in to those events and check and see if we’re getting something that we want to support (like our “Hobbies” node). Here’s a way to read in the old XML data with full support of the new data structure (and keeping the Hobbies collection marked as obsolete): static void Main(string[] args) { var xml = @"<?xml version=""1.0"" encoding=""IBM437""?> <MyData xmlns:xsi=""http://www.w3.org/2001/XMLSchema-instance"" xmlns:xsd=""http://www.w3.org/2001/XMLSchema""> <Age>50</Age> <FirstName>Zachary</FirstName> <LastName>Smith</LastName> <Hobbies> <string>Mischief</string> <string>Sabotage</string> </Hobbies> </MyData>"; var serializer = new XmlSerializer(typeof(MyData)); serializer.UnknownElement += serializer_UnknownElement; var stream = new StringReader(xml); var data = (MyData)serializer.Deserialize(stream);   if (data.Hobbies.Count != 2) { throw new ApplicationException("Hobbies did not deserialize properly"); } }   static void serializer_UnknownElement(object sender, XmlElementEventArgs e) { if( e.Element.Name != "Hobbies") { return; }   var target = (MyData) e.ObjectBeingDeserialized; foreach(XmlElement hobby in e.Element.ChildNodes) { target.Hobbies.Add(hobby.InnerText); target.HobbyData.Add(new Hobby{Name = hobby.InnerText}); } } As you can see, we hook in to the “UnknownElement” event.  Once we determine it’s our “Hobbies” node, we deserialize it ourselves – as well as populating the new HobbyData collection.  In this case, we have a fairly simple solution to a small change in XML layout.  If you make more extensive changes, it would probably be easier to do some custom serialization to support older data. A sample project with all of this code is available from my repository on bitbucket. Technorati Tags: XmlSerializer,Obsolete,.NET

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  • how to be a web developer [closed]

    - by David
    Well, I'm 34 years old, and I have a master degree in computer science, for some how I cannot get a job as a programmer when I was younger, so I got a job related to computer. Recently I work in content management system, and updating the content of web portals. I'm trying to be a web programmer, so I started learning the techniques for web development, and CMS. I have a good knowledge of PHP and Wordpress, but I have a problem when I apply for a job I got the answer "sorry, you have no experience!" how can I solve that, and get a career in programming and web development?

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  • How do you add more space to a Fedora (LVM) partition?

    - by Trevor Boyd Smith
    In a nutshell, i have a VM that ran out of space. I increased the size of the VM's harddrive to be 4 times bigger but the OS partition is still only using 1x the space. I need to change the LVM partition to take up the extra 4x space but I don't know how to extend the LVM partition. (NOTE: To make the screenshots given below I had to boot from a live-cd for gnome-partition-manager (aka gparted). Very unfortunately gparted is only able to "detect LVM" and can't do any LVM operations.) Here is what "gparted" shows. Please notice that the "resize" option is not available: The Problem: I can't find good directions<1 on how to grow the LVM partition via GUI or command-line! How do you grow a LVM partition that was created by the default Fedora install? If you are giving command line directions. Please explain what each line of commands does.

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  • sp_help

    - by David-Betteridge
    One of the nice things about SQL Server Management Studio (SSMS) is that you can highlight a table name in a script and press Alt + F1 to perform sp_help on it. Unfortunately I've never been able to use that feature as the majority of the tables in our product belong to a schema other than dbo.    On a long train journey back to York I wondered if I could solve this problem by writing my own replacement for sp_help (which I’ve called sp_help_table_schemas).  My version works by first checking the system tables to find out which schemas the table belongs to SELECT s.Name   --Find the schema FROM sys.schemas s  JOIN sys.tables t on t.schema_id = s.schema_id  WHERE t.name = 'Orders'It then dynamically calls the standard sp_help method but this time supplying the table owner as well.SET @cmd = 'EXEC sp_help ''' + QUOTENAME(@SchemaName) + '.' + QUOTENAME(@ObjectName) + ''' ;' ;           EXEC ( @cmd )Once I had proved the basics worked I wrapped it up into a stored procedure and deployed it to the master database on my laptop.  It was then just a question of going into Tools à Options within SSMS and defining the keyboard short cutA couple of notes You can’t amend the existing Alt+F1 entry to I went with Ctrl+F1.  You need to open new query window for the change to be picked upSo I can now highlight a table name and press Ctrl+F1 The completed script is attached.   Thanks go to Martin Bell who reviewed my stored procedure and give some valuable advice.

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  • Where to look for a programming partner?

    - by David
    Say that you want to start a new project (I'm talking about a serious project — e.g if you had an idea that seems good and profitable — not about something you start just to learn a new technology or just for your enjoyment) but you don't feel like you can do it alone since, for example, you lack the experience or the technical skills to go through all the phases needed to go from the idea to the final product. Say also that you don't simply want to hire someone. You want someone who can be as passionate as you in the job, that is “proficient” in and enthusiast of the same technologies as you are and that possibly has a background similar to yours (e.g. you both are students, you both come from a prestigious univerity or just you're both Star Trek nerds). So, basically you don't want a person to tell what to do (e.g. “implement this and that, slave!”) but someone who can be inspiring and bring something new and important to your project. Someone to go with you from the earliest stage — from clearly shaping the project's philosophy to drawing mockups etc. Someone who agrees to share the outcome of the project, that strongly believes in the idea behind it and is completely 50-50 with you. Now the question is: how to improve your chances of finding this person (or persons)? Where would you look at first? For example, if you had a lot of funds and were looking for someone to hire, you'd maybe post an ad in SO careers or jobs.73signals; if you already had a team and were looking for funding, you'd start a project on kickstarter or indiegogo, or you'd go to some startup event. But if you had to find a good partner (and programmer, of course) for you're project, where would you start looking? Which strategies would you use?

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  • Incomplete upgrade 12.04 to 12.10

    - by David
    Everything was running smoothly. Everything had been downloaded from Internet, packages had been installed and a prompt asked for some obsolete programs/files to be removed or kept. After that the computer crashed and and to manually force a shutdown. I turned it on again and surprise I was on 12.10! Still the upgrade was not finished! How can I properly finish that upgrade? Here's the output I got in the command line after following posted instructions: i astrill - Astrill VPN client software i dayjournal - Simple, minimal, digital journal. i gambas2-gb-form - A gambas native form component i gambas2-gb-gtk - The Gambas gtk component i gambas2-gb-gtk-ext - The Gambas extended gtk GUI component i gambas2-gb-gui - The graphical toolkit selector component i gambas2-gb-qt - The Gambas Qt GUI component i gambas2-gb-settings - Gambas utilities class i A gambas2-runtime - The Gambas runtime i google-chrome-stable - The web browser from Google i google-talkplugin - Google Talk Plugin i indicator-keylock - Indicator for Lock Keys i indicator-ubuntuone - Indicator for Ubuntu One synchronization s i A language-pack-kde-zh-hans - KDE translation updates for language Simpl i language-pack-kde-zh-hans-base - KDE translations for language Simplified C i libapt-inst1.4 - deb package format runtime library idA libattica0.3 - a Qt library that implements the Open Coll idA libbabl-0.0-0 - Dynamic, any to any, pixel format conversi idA libboost-filesystem1.46.1 - filesystem operations (portable paths, ite idA libboost-program-options1.46.1 - program options library for C++ idA libboost-python1.46.1 - Boost.Python Library idA libboost-regex1.46.1 - regular expression library for C++ i libboost-serialization1.46.1 - serialization library for C++ idA libboost-signals1.46.1 - managed signals and slots library for C++ idA libboost-system1.46.1 - Operating system (e.g. diagnostics support idA libboost-thread1.46.1 - portable C++ multi-threading i libcamel-1.2-29 - Evolution MIME message handling library i libcmis-0.2-0 - CMIS protocol client library i libcupsdriver1 - Common UNIX Printing System(tm) - Driver l i libdconf0 - simple configuration storage system - runt i libdvdcss2 - Simple foundation for reading DVDs - runti i libebackend-1.2-1 - Utility library for evolution data servers i libecal-1.2-10 - Client library for evolution calendars i libedata-cal-1.2-13 - Backend library for evolution calendars i libedataserver-1.2-15 - Utility library for evolution data servers i libexiv2-11 - EXIF/IPTC metadata manipulation library i libgdu-gtk0 - GTK+ standard dialog library for libgdu i libgdu0 - GObject based Disk Utility Library idA libgegl-0.0-0 - Generic Graphics Library idA libglew1.5 - The OpenGL Extension Wrangler - runtime en i libglew1.6 - OpenGL Extension Wrangler - runtime enviro i libglewmx1.6 - OpenGL Extension Wrangler - runtime enviro i libgnome-bluetooth8 - GNOME Bluetooth tools - support library i libgnomekbd7 - GNOME library to manage keyboard configura idA libgsoap1 - Runtime libraries for gSOAP i libgweather-3-0 - GWeather shared library i libimobiledevice2 - Library for communicating with the iPhone i libkdcraw20 - RAW picture decoding library i libkexiv2-10 - Qt like interface for the libexiv2 library i libkipi8 - library for apps that want to use kipi-plu i libkpathsea5 - TeX Live: path search library for TeX (run i libmagickcore4 - low-level image manipulation library i libmagickwand4 - image manipulation library i libmarblewidget13 - Marble globe widget library idA libmusicbrainz4-3 - Library to access the MusicBrainz.org data i libnepomukdatamanagement4 - Basic Nepomuk data manipulation interface i libnux-2.0-0 - Visual rendering toolkit for real-time app i libnux-2.0-common - Visual rendering toolkit for real-time app i libpoppler19 - PDF rendering library i libqt3-mt - Qt GUI Library (Threaded runtime version), i librhythmbox-core5 - support library for the rhythmbox music pl i libusbmuxd1 - USB multiplexor daemon for iPhone and iPod i libutouch-evemu1 - KernelInput Event Device Emulation Library i libutouch-frame1 - Touch Frame Library i libutouch-geis1 - Gesture engine interface support i libutouch-grail1 - Gesture Recognition And Instantiation Libr idA libx264-120 - x264 video coding library i libyajl1 - Yet Another JSON Library i linux-headers-3.2.0-29 - Header files related to Linux kernel versi i linux-headers-3.2.0-29-generic - Linux kernel headers for version 3.2.0 on i linux-image-3.2.0-29-generic - Linux kernel image for version 3.2.0 on 64 i mplayerthumbs - video thumbnail generator using mplayer i myunity - Unity configurator i A openoffice.org-calc - office productivity suite -- spreadsheet i A openoffice.org-writer - office productivity suite -- word processo i python-brlapi - Python bindings for BrlAPI i python-louis - Python bindings for liblouis i rts-bpp-dkms - rts-bpp driver in DKMS format. i system76-driver - Universal driver for System76 computers. i systemconfigurator - Unified Configuration API for Linux Instal i systemimager-client - Utilities for creating an image and upgrad i systemimager-common - Utilities and libraries common to both the i systemimager-initrd-template-am - SystemImager initrd template for amd64 cli i touchpad-indicator - An indicator for the touchpad i ubuntu-tweak - Ubuntu Tweak i A unity-lens-utilities - Unity Utilities lens i A unity-scope-calculator - Calculator engine i unity-scope-cities - Cities engine i unity-scope-rottentomatoes - Unity Scope Rottentomatoes

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  • After suspend, my monitor wont turn back on

    - by David
    I set my pc to suspend after 5 minutes of inactivity, when I return to my computer I mash a couple of keys and the pc turns back on and the drives start spinning etc etc, but I get no signal to either of my monitors. My peripherals are powered as the num/caps lock lights turn on and off. I should add I have two monitors, I have the same problem on both. As I am writing the last line from my previous paragraph keeps disappearing. I press control z and it comes back but kinda weird. Thanks in advance for any help :)

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