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  • Data Model Dissonance

    - by Tony Davis
    So often at the start of the development of database applications, there is a premature rush to the keyboard. Unless, before we get there, we’ve mapped out and agreed the three data models, the Conceptual, the Logical and the Physical, then the inevitable refactoring will dog development work. It pays to get the data models sorted out up-front, however ‘agile’ you profess to be. The hardest model to get right, the most misunderstood, and the one most neglected by the various modeling tools, is the conceptual data model, and yet it is critical to all that follows. The conceptual model distils what the business understands about itself, and the way it operates. It represents the business rules that govern the required data, its constraints and its properties. The conceptual model uses the terminology of the business and defines the most important entities and their inter-relationships. Don’t assume that the organization’s understanding of these business rules is consistent or accurate. Too often, one department has a subtly different understanding of what an entity means and what it stores, from another. If our conceptual data model fails to resolve such inconsistencies, it will reduce data quality. If we don’t collect and measure the raw data in a consistent way across the whole business, how can we hope to perform meaningful aggregation? The conceptual data model has more to do with business than technology, and as such, developers often regard it as a worthy but rather arcane ceremony like saluting the flag or only eating fish on Friday. However, the consequences of getting it wrong have a direct and painful impact on many aspects of the project. If you adopt a silo-based (a.k.a. Domain driven) approach to development), you are still likely to suffer by starting with an incomplete knowledge of the domain. Even when you have surmounted these problems so that the data entities accurately reflect the business domain that the application represents, there are likely to be dire consequences from abandoning the goal of a shared, enterprise-wide understanding of the business. In reading this, you may recall experiences of the consequence of getting the conceptual data model wrong. I believe that Phil Factor, for example, witnessed the abandonment of a multi-million dollar banking project due to an inadequate conceptual analysis of how the bank defined a ‘customer’. We’d love to hear of any examples you know of development projects poleaxed by errors in the conceptual data model. Cheers, Tony

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  • Screenshot Tour: Ubuntu Touch 14.04 on a Nexus 7

    - by Chris Hoffman
    Ubuntu 14.04 LTS will “form the basis of the first commercially available Ubuntu tablets,” according to Canonical. We installed Ubuntu Touch 14.04 on our own hardware to see what those tablets will be like. We don’t recommend installing this yourself, as it’s still not a polished, complete experience. We’re using “Ubuntu Touch” as shorthand here — apparently this project’s new name is “Ubuntu For Devices.” The Welcome Screen Ubuntu’s touch interface is all about edge swipes and hidden interface elements — it has a lot in common with Windows 8, actually. You’ll see the welcome screen when you boot up or unlock a Ubuntu tablet or phone. If you have new emails, text messages, or other information, it will appear on this screen along with the time and date. If you don’t, you’ll just see a message saying “No data sources available.” The Dash Swipe in from the right edge of the welcome screen to access the Dash, or home screen. This is actually very similar to the Dash on Ubuntu’s Unity desktop. This isn’t a surprise — Canonical wants the desktop and touch versions of Ubuntu to use the same code. In the future, the desktop and touch versions of Ubuntu will use the same version of Unity and Unity will adjust its interface depending on what type of device your’e using. Here you’ll find apps you have installed and apps available to install. Tap an installed app to launch it or tap an available app to view more details and install it. Tap the My apps or Available headings to view a complete list of apps you have installed or apps you can install. Tap the Search box at the top of the screen to start searching — this is how you’d search for new apps to install. As you’d expect, a touch keyboard appears when you tap in the Search field or any other text field. The launcher isn’t just for apps. Tap the Apps heading at the top of the screen and you’ll see hidden text appear — Music, Video, and Scopes. This hidden navigation is used throughout Ubuntu’s different apps and can be easy to miss at first. Swipe to the left or right to move between these screens. These screens are also similar to the different panels in Unity on the desktop. The Scopes section allows you to view different search scopes you have installed. These are used to search different sources when you start a search from the Dash. Search from the Music or Videos scopes to search for local media files on your device or media files online. For example, searching in the Music scope will show you music results from Grooveshark by default. Navigating Ubuntu Touch Swipe in from the left edge anywhere on the system to open the launcher, a bar with shortcuts to apps. This launcher is very similar to the launcher on the left of Ubuntu’s Unity desktop — that’s the whole idea, after all. Once you’ve opened an app, you can leave the app by swiping in from the left. The launcher will appear — keep moving your finger towards the right edge of teh screen. This will swipe the current app off the screen, taking you back to the Dash. Once back on the Dash, you’ll see your open apps represented as thumbnails under Recent. Tap a thumbnail here to go back to a running app. To remove an app from here, long-press it and tap the X button that appears. Swipe in from the right edge in any app to quickly switch between recent apps. Swipe in from the right edge and hold your finger down to reveal an application switcher that shows all your recent apps and lets you choose between them. Swipe down from the top of the screen to access the indicator panel. Here you can connect to Wi-Fi networks, view upcoming events, control GPS and Bluetooth hardware, adjust sound settings, see incoming messages, and more. This panel is for quick access to hardware settings and notifications, just like the indicators on Ubuntu’s Unity desktop. The Apps System settings not included in the pull-down panel are available in the System Settings app. To access it, tap My apps on the Dash and tap System Settings, search for the System Settings app, or open the launcher bar and tap the settings icon. The settings here a bit limited compared to other operating systems, but many of the important options are available here. You can add Evernote, Ubuntu One, Twitter, Facebook, and Google accounts from here. A free Ubuntu One account is mandatory for downloading and updating apps. A Google account can be used to sync contacts and calendar events. Some apps on Ubuntu are native apps, while many are web apps. For example, the Twitter, Gmail, Amazon, Facebook, and eBay apps included by default are all web apps that open each service’s mobile website as an app. Other applications, such as the Weather, Calendar, Dialer, Calculator, and Notes apps are native applications. Theoretically, both types of apps will be able to scale to different screen resolutions. Ubuntu Touch and Ubuntu desktop may one day share the same apps, which will adapt to different display sizes and input methods. Like Windows 8 apps, Ubuntu apps hide interface elements by default, providing you with a full-screen view of the content. Swipe up from the bottom of an app’s screen to view its interface elements. For example, swiping up from the bottom of the Web Browser app reveals Back, Forward, and Refresh buttons, along with an address bar and Activity button so you can view current and recent web pages. Swipe up even more from the bottom and you’ll see a button hovering in the middle of the app. Tap the button and you’ll see many more settings. This is an overflow area for application options and functions that can’t fit on the navigation bar. The Terminal app has a few surprising Easter eggs in this panel, including a “Hack into the NSA” option. Tap it and the following text will appear in the terminal: That’s not very nice, now tracing your location . . . . . . . . . . . .Trace failed You got away this time, but don’t try again. We’d expect to see such Easter eggs disappear before Ubuntu Touch actually ships on real devices. Ubuntu Touch has come a long way, but it’s still not something you want to use today. For example, it doesn’t even have a built-in email client — you’ll have to us your email service’s mobile website. Few apps are available, and many of the ones that are are just mobile websites. It’s not a polished operating system intended for normal users yet — it’s more of a preview for developers and device manufacturers. If you really want to try it yourself, you can install it on a Wi-Fi Nexus 7 (2013), Nexus 10, or Nexus 4 device. Follow Ubuntu’s installation instructions here.

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  • Google I/O 2011: How to Get Your Startup Idea Funded by Venture Capitalists

    Google I/O 2011: How to Get Your Startup Idea Funded by Venture Capitalists Don Dodge, Joe Kraus, Paul Buchheit, Seth Priebatsch Have an idea and want to start a company? Learn how to attract investors, and what they want to see before writing a check. Hear from entrepreneurs who have raised money and VCs who have funded them. From: GoogleDevelopers Views: 16911 146 ratings Time: 01:00:27 More in Science & Technology

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  • 10 Security Tips for the Holidays&amp;#133;And Beyond

    While you&#146;re focused on the year-end sales numbers, don&#146;t let your guard down when it comes to security, because a bad computer or network virus is a not-so-nice gift that keeps on giving long past the holidays. These 10 tips will help you keep your festive cheer.

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  • Free Software is not only GNU

    <b>Flameeyes:</b> "I don&#8217;t try to hide the fact that I think that FSF&#8217;s continuous stress over &#8220;GNU/Linux&#8221; is a huge ego stroke toward GNU that tries to deny that there is other Free Software beside GNU."

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  • How to Disable Application Switching in Windows 8

    - by Taylor Gibb
    Application switching allows you to quickly switch between your open Metro apps by sliding your finger across the left side of the screen, or moving your mouse to the corner. If you don’t like this behavior, it’s easy to disable. How to Stress Test the Hard Drives in Your PC or Server How To Customize Your Android Lock Screen with WidgetLocker The Best Free Portable Apps for Your Flash Drive Toolkit

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  • Google Games Chat, September 13

    Google Games Chat, September 13 The Google Games Chat (official motto: "Still not cancelled") is back for yet another rousing debate about industry trends, the state of gaming in general, and, frankly, any other random thoughts that happen to cross our minds. We don't really filter what we say very much. This week, we'll be talking about App Discovery, a subject near and dear to everybody's heart. From: GoogleDevelopers Views: 0 2 ratings Time: 00:00 More in Science & Technology

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  • You probably have enough

    - by BuckWoody
    This a decidedly non-technical post, and even a little preachy. I post it here because you, the technical professional, are the perfect audience for it. I have enough stuff. I never think so, of course, but I do. I don’t consider myself rich, but if you have a comfortable place to sleep,  enough food to eat and you can plan for your future, you are rich. And when we are rich enough to have “enough” stuff, that usually means we have too much stuff. Stuff costs money that could be put to better use, stuff needs painting, cleaning, fueling, feeding, storage and caring for. Stuff is a burden. So I decided a few years back that I had enough stuff. We gave away a lot of things, and we don’t buy any new (meaning we didn’t have one before)  things – only replacement things. We’d rather “do something” than “have something”. But even so, when birthdays, anniversaries and Christmas rolled around, we got more stuff. So I asked all of my friends and relatives to do something for me.   I ask folks that want to give me a gift (for whatever reason) to donate the price they would have paid for the gift to a charity they care about. This does a few things: They have to find a charity to care about The fact that I made it through a calendar year now actually means something Someone else gets the help they need Everybody feels better No, I’m not saying these things so you’ll think I’m a wonderful person - the reason I’m posting this here is that as a technical professional you probably have enough stuff like I do. So I ask you to try this out. Try it for one birthday, or one Holiday, or even for a year. I can promise this: it will change your life, the life of the person who gives the gift, and the person’s life who receives it. If you do try it, I’d love to have a comment here on your thoughts.

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  • Get a Totally free Apple iPad Mearly For Trying It!

    If you want to get your hands on the cutting edge Apple iPAD, but you don';t necessarily wish to spend the $500 dollars... There is certainly other alternatives out there. For instance obtaining an Ap... [Author: Tim Cooper - Computers and Internet - April 09, 2010]

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  • Prevent Truncation of Dynamically Generated Results in SQL Server Management Studio

    While working with the Results to Text option in SSMS, you may come across a situation where the output from dynamically generated data is truncated. In this article I will guide you on how to fix this issue and print all the text for the Results to Text option. "SQL Backup Pro 7 improves on an already wonderful product" - Don KolendaHave you tried version 7 yet? Get faster, smaller, fully verified backups. Download a free trial of SQL Backup Pro 7.

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  • 10 Useful Windows Commands You Should Know

    - by Chris Hoffman
    There are some things you can only do from the command line, even on Windows. Some of these tools don’t have graphical equivalents, while others are just plain faster to use than their graphical interfaces. We can’t possibly cover all the useful commands you can use in the Command Prompt or PowerShell here. We’ll be focusing on commands that should be useful even if you’re not a command-line person.    

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  • Don't Bail on Your Business Blog

    Recent studies may have you thinking that it&#146;s time to give up the blog and focus on Twitter or Facebook. But don&#146;t be rash. Search engine optimization is a major benefit of keeping a business blog.

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  • Keeping your options open in a cloud solution

    - by BuckWoody
    In on-premises solutions we have the full range of options open for a given computing solution – but we don’t always take advantage of them, for multiple reasons. Data goes in a Relational Database Management System, files go on a share, and e-mail goes to the Exchange server. Over time, vendors (including ourselves) add in functionality to one product that allow non-standard use of the platform. For example, SQL Server (and Oracle, and others) allow large binary storage in or through the system – something not originally intended for an RDBMS to handle. There are certainly times when this makes sense, of course, but often these platform hammers turn every problem into a nail. It can make us “lazy” in our design – we sometimes don’t take the time to learn another architecture because the one we’ve spent so much time with can handle what we want to do. But there’s a distinct danger here. In nature, when a population shares too many of the same traits, it can cause a complete collapse if a situation exploits a weakness shared by that population. The same is true with not using the righttool for the job in a computing environment. Your company or organization depends on your knowledge as a professional to select the best mix of supportable, flexible, cost-effective technologies to solve their problems, whether you’re in an architect role or not.  So take some time today to learn something new. The way I do this is to select a given problem, and try to solve it with a technology I’m not familiar with. For instance – create a Purchase Order system in Excel, then in Hadoop or MongoDB, or even in flat-files using PowerShell as an interface. No, I’m not suggesting any of these architectures are the proper way to solve the PO problem, but taking something concrete that you know well and applying that meta-knowledge to another platform will assist you in exercising the “little grey cells” and help you and your organization understand what is open to you. And of course you can do all of this on-premises – but my recommendation is to check out a cloud platform (my suggestion would of course be Windows Azure :) ) and try it there. Most providers (including Microsoft) provide free time to do that.

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  • Getting my stuff organised

    - by NeilHambly
    I start off by saying, "I'm not that organised" @ times and things just don't get done even If I want them too So having missed some of my own personal targets so far this year already, I thought I needed some better way to achieve on those targets and one of these is to be a "little" more organised with my spare time, so I have decided that I will "try out" the following to see if it helps For 3 weeks each month I will follow this routine (my evenings after...(read more)

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  • The Problem Should Define the Process, Not the Tool

    - by thatjeffsmith
    All around awesome tool, but not the only gadget in your toolbox.I’m stepping down from my SQL Developer pulpit today and standing up on my philosophical soap box. I’m frequently asked to help folks transition from one set of database tools over to Oracle SQL Developer, which I’m MORE than happy to do. But, I’m not looking to simply change the way people interact with Oracle database. What I care about is your productivity. Is there a faster, more efficient way for you to connect the dots, get from A to B, or just get home to your kids or to the pub for happy hour? If you have defined a business process around a specific tool, what happens when that tool ‘goes away?’ Does the business stop? No, you feel immediate pain until you are able to re-implement the process using another mechanism. Where I get confused, or even frustrated, is when someone asks me to redesign our tool to match their problem. Tools are just tools. Saying you ‘can’t load your data anymore because XYZ’ isn’t valid when you could easily do that same task via SQL*Loader, Create Table As Selects, or 9 other different mechanisms. Sometimes changes brings opportunity for improvement in the process. Don’t be afraid to step back and re-evaluate a problem with a fresh set of eyes. Just trying to replicate your process in another tool exactly as it was done in the ‘old tool’ doesn’t always make sense. Quick sidebar: scheduling a Windows program to kick off thousands if not millions of table inserts from Excel versus using a ‘proper’ server process using SQL*Loader and or external tables means sacrificing scalability and reliability for convenience. Don’t let old habits blind you to new solutions and possibilities. Of couse I’m not going to sit here and say that our tools aren’t deficient in some areas or can’t be improved upon. But I bet if we work together we can find something that’s not only better for the business, but is also better for you. What do you ‘miss’ since you’ve started using SQL Developer as your primary Oracle database tools? I’d love to start a thread here and share ideas on how we can better serve you and your organizations needs. The end solution might not look exactly what you have in mind starting out, but I had no idea I’d be a Product Manager when I started college either What can you no longer ‘do’ since you picked up SQL Developer? What hurts more than it should? What keeps you from being great versus just good?

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  • SQL Server For Each Row Next

    - by Derek Dieter
    It is difficult for me to write this particular article and I’ll tell you why. If you don’t care then just skip down to the example, but here goes anyway. It is very rare that you should have to perform looping in SQL. There are certain situations that do require it, and [...]

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  • Dartisans ep 13 - An M1 Birthday Special!

    Dartisans ep 13 - An M1 Birthday Special! Don't miss this special episode of Dartisans! Hosts JJ Behrens and Seth Ladd, with special guest Gilad Bracha, talk about Dart's M1 release and what's new with the Dart SDK. Ask and vote for questions at developers.google.com Learn more about Dart at www.dartlang.org From: GoogleDevelopers Views: 384 23 ratings Time: 44:55 More in Science & Technology

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  • Google Games Chat #5

    Google Games Chat #5 The Google Games Chat (official motto: "Still not cancelled") is back for yet another rousing debate about industry trends, the state of gaming in general, and, frankly, any other random thoughts that happen to cross our minds. We don't really filter what we say very much. Ask us questions in the moderator link! We might even get around to answering them! From: GoogleDevelopers Views: 0 0 ratings Time: 00:00 More in Gaming

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  • 4 Ideas Computer Work From Home

    Working at home may seem to be ideal work. You can wake up late if do not have a meeting or scheduled work to be done. You have no boss to reprimand you. You don';t have to go deal with traffic on yo... [Author: Jeff Schuman - Computers and Internet - June 10, 2010]

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  • Google Drive SDK: Writing your first Drive app on Android

    Google Drive SDK: Writing your first Drive app on Android If you want to write a Drive app on Android and don't know how to get started, this is the sessions for you. We'll start from the very basics and go through all the steps needed to build an Android app that uses the device camera to take pictures and upload them to Google Drive. From: GoogleDevelopers Views: 0 0 ratings Time: 03:30:00 More in Science & Technology

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  • Partitioned Tables, Indexes and Execution Plans: a Cautionary Tale

    Table partitioning is a blessing in that it makes large tables that have varying access patterns more scalable and manageable, but it is a mixed blessing. It is important to understand the down-side before using table partitioning. "SQL Backup Pro 7 improves on an already wonderful product" - Don KolendaHave you tried version 7 yet? Get faster, smaller, fully verified backups. Download a free trial of SQL Backup Pro 7.

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