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  • 2010 SQLPeople Person of the Year

    - by andyleonard
    Introduction Back in 2010, I started recognizing the SQLPeople Person of the Year. It's been a tradition ever since. "But Andy, you're writing this in 2010." Yep. Good eye, Pep. The Award Goes To: Steve Jones ( Blog | @way0utwest ). I am not a DBA - I'm a database developer. I joke and say I look like the world's greatest DBA when there's no contention, the jobs are finishing successfully, queries return data quickly and accurately, and the backups succeed. But anyone looks like the world's greatest...(read more)

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  • Did You Know? More online seminars!

    - by Kalen Delaney
    I am in Tucson again, having just recorded two more online workshops to be broadcast by SSWUG. We haven't set the dates yet, but we are thinking about offering a special package deal for the two of them. The topics really are related and I think they would work well together. They are both on aspects of Query Processing. The first was on how to interpret Query Plans and is an introduction to the topic. However, it only includes a discussion of how SQL Server actually processes your queries. For example,...(read more)

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  • Funky Behavior NoTracking Query Entities

    I’ve been using a lot of NoTracking queries to grab lists of data that I don’t need change tracked. It enhances performance and cuts down on resources. There are some nuances about these entities, however. One of the interesting behaviors of EF4’s Lazy Loading is that even if you have entities that you have queried with NoTracking on, they will still lazy load related entities. Unless you’ve read this somewhere (it’s on the ADO.NET team’s blog post which introduces...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Building a website, want to use java

    - by Robb
    I'd like to make a simple-ish website that is essentially a small game. Key strokes are to be processed and sent to a server (already acquired and should support SQL and JSP, I believe) which then translate to a location and written to the DB. SQL queries are to be used to retrieve these locations and written to other clients connected to the website. Their page is to be updated with these locations. I have working knowledge of Java, jQuery/Ajax, SQL and JavaScript but I'm unfamiliar with JSP and how everything hooks up. I'm aware of the MVC paradigm as well. For my little game idea, would these technologies work? Am I over thinking this and can make it much easier to implement? What might be a good tutorial or example to study?

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  • What does Avg Position from Google Webmaster really mean

    - by RandomBen
    I have a website I am tracking on Google's Webmaster tools. When I look at the Search queries page it shows me a graph of Impressions and clicks per day. Underneath that there is a table showing specific results. One of the columns is Avg Position. That columns seems to include paid ads. Is that correct, does the Avg Position also include the top result ads(the ads at the top of the search results)? I am asking because the company I work for has a not so common name and whenever I Google it our site is the #1 result 100% of the time. The only thing above it is 1 paid add. When I checkout Webmaster tools I notice that searching for our name returns with us at an Avg Position of 2.0. That seems like it would be only possible if paid top result ads were included in that position. Does anyone know?

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  • Is it convenient to use a XML/JSON generated based system? [closed]

    - by Marcelo de Assis
    One of my clients insists that we missed a requisite for the project(a little social network, using PHP + MySql), is that all queries are made from XML / JSON static files (using AJAX) and not directly from the database. Edit: The main reason, stated by client, is a way to economize bandwith. Even the file loading, has to be using AJAX, to avoid server side processing. We will still use a database to store and insert data. These XML / JSON files will be (re) generated whenever any data is changed by CMS or users. As the project was developed without this "technique", we'll have a lot of work ahead, so I would like to avoid that. I'm asking if it's convenient to use a XML generated based system, because I think a database is already "optimized" and secure to deal with a lot of data traffic. Other issue I'm afraid of, is a chance of conflict when a user is trying to read a XML/JSON which is being just generated.

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  • Friday Fun: Snowmageddon

    - by Asian Angel
    Has it been a long week at work and your Friday is just not passing quickly enough? If you are in need of some stress relief today then get ready to battle evil mutant snowmen in Snowmageddon Latest Features How-To Geek ETC How to Integrate Dropbox with Pages, Keynote, and Numbers on iPad RGB? CMYK? Alpha? What Are Image Channels and What Do They Mean? How to Recover that Photo, Picture or File You Deleted Accidentally How To Colorize Black and White Vintage Photographs in Photoshop How To Get SSH Command-Line Access to Windows 7 Using Cygwin The How-To Geek Video Guide to Using Windows 7 Speech Recognition Stylebot Customizes Web Pages in Chrome, Now Has Downloadable Styles Blackberry, Dell, Apple, and Motorola Tablets Compared [Infographic] Encrypt Your Google Search Queries Vintage Posters Showcase the History of Tech Advertising Google Cloud Print Extension Lets You Print Doc/PDF/Txt Files from Web Sites Hack a $10 Flashlight into an Ultra-bright Premium One

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  • Designing complex query builders in java/jpa/hibernate

    - by Ramraj Edagutti
    I need to build complex sql queries programatically, based on large filter conditions. For example, below are few sample/hypothitical filter conditions, based on which i need to fetch users Country: india States: Andhra Pradesh(AP), Gujarat(GUJ), karnataka(KTK) Districts: All districts in AP except 3 district, 5 any districts from GUJ, all district from KTK except 1 district Cities: All cities in AP, all cities except few, include only 50 specific cities from KTK Villages: similar conditions like above with varies combinations... Currently, we have a query builder, which is very complex in nature, and not easy to modify/re-factory for improvements. So, thinking of complete re-design of it. Any suggesations on how to build this kind of complex query builders programmatically using some best practices/deisgn patterns?

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  • Is Query Performance different for different versions of SQL Server?

    - by Ronak Mathia
    I have fired 3 update queries in my stored procedure for 3 different tables. Each table contains almost 2,00,000 records and all records have to be updated. I am using indexing to speed up the performance. It quite working well with SQL Server 2008. stored procedure takes only 12 to 15 minutes to execute. (updates almost 1000 rows in 1 second in all three tables) But when I run same scenario with SQL Server 2008 R2 then stored procedure takes more time to complete execution. its about 55 to 60 minutes. (updates almost 100 rows in 1 second in all three tables). I couldn't find any reason or solution for that. I have also tested same scenario with SQL Server 2012. but result is same as above. Please give suggestions.

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  • Number of Weeks between 2 Dates in SQL Server and Oracle

    This post gives you queries in Oracle and SQL Server to find number of weeks between 2 given dates Microsoft SQL Server Syntax: SELECT DATEDIFF (ww, '01/01/1753', '12/31/9999'); Oracle Syntax: SELECT floor(              (to_date('12/31/9999','mm/dd/yyyy')               - to_date('01/01/1753','mm/dd/yyyy')              )              / 7) diff FROM DUAL; span.fullpost {display:none;}

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  • Real Time BI in the Real World

    - by tobin.gilman(at)oracle.com
    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:10.0pt; font-family:"Times New Roman","serif";} 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:10.0pt; font-family:"Times New Roman","serif"; mso-fareast-font-family:"Times New Roman";} One of my favorite BI offerings from Oracle is a solution called Oracle Real Time Decisions.  Whenever I mention this product in customer meetings, eyes light up.  There are some fascinating examples of customers using it to up-sell, cross-sell, increase customer retention, and reduce risk in real time, with off the charts return on investment. I plan to share some of those stories in a future blog.  In this post however, I want to share some far more common real time analytics use case scenarios that are being addressed with widely deployed Oracle BI and data integration technologies Not all real time BI applications require continuous learning, predictive modeling, and data mining.  Many simply require the ability to integrate, aggregate, and access information that is current (typically within in few minutes or a few seconds).  The use cases are infinite.  A few I've seen: ·         Purchasing agents need to match demand against available inventory ·         Manufacturing planners need to monitor current parts and material against scheduled build plans ·         Airline agents need to match ticket demand against flight schedules, ·         Human resources managers need to track the status of global hiring requisitions against current headcount authorizations...you get the idea. One way of doing this is to run reports or federated queries directly against transactional systems.  That approach can be viable if you only need to access simple data sets on rare occasions.  High volume and complex queries can quickly bog down performance of mission critical transactional systems.  There is an architecturally simple way of solving the problem, and it's being applied by real companies around the world to solve real needs in real time.    Cbeyond is an Atlanta, GA based  provider of voice, data and mobile business applications delivers.  They deliver real time information to its call center agents  as they are interacting with their customers. The data they need resides in production CRM and other transactional systems, but  instead or reporting directly off the those systems, data is first moved to an operational data store (ODS).  Rather than running data intensive, time consuming, and performance degrading batch ETL routines to populate the ODS, Cbeyond uses Oracle Golden Gate software to incrementally capture and move only the changed records from log files of the transactional systems every few minutes.  There is no impact on transactional system performance, and the information needed by call center representatives is up to date.  Oracle Business Intelligence software presents the information to services reps in a rich, visual, and highly interactive format. Avea is similar to Cbeyond.  They are a telecommunications company who integrates billing and customer information in an ODS that is accessed by their call center agents in real time using Oracle Golden Gate and Oracle Business Intelligence.  They've taken it a step further by using the ODS to feed a data warehouse.  The operational data store provides the current information needed by call center agents during "in flight" customer interactions.  The data warehouse is used for more sophisticated analysis of historical data.  For maximum performance, both the ODS and data warehouse run on the Oracle Exadata Database Machine. These are practical illustrations of companies addressing real time reporting and analysis needs using established business intelligence/data warehousing methodologies and tools common to many IT departments.  If real time BI could benefit your organization, you may be already be closer than you thought to having the pieces in place to solving the problem.    Give us a shout if you are interested in learning more or if you have an interesting use or approach to real-time BI.

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  • What Is StreamInsight? A Primer for Non-Programmers

    - by Roman Schindlauer
    Are you trying to figure out whether StreamInsight might be something you could use, but you’re having trouble sifting through all the programming jargon that’s used to describe it? StreamInsight is, ultimately, a set of programming tools, and at some point it takes a programmer to implement a StreamInsight solution. But it really should be possible to get a handle on what StreamInsight is all about even if you’re not a programmer yourself. A new article published in the TechNet Wiki may be able to help: StreamInsight for Non-Programmers. It gives an overview of the technology, but it leaves out the C# references and relates StreamInsight to more familiar SQL databases and queries. Check it out. When you’re done there and are ready to dig a little deeper, take a look at Get Started with StreamInsight 2.1. That article should help you navigate through the StreamInsight official documentation and other resources. And, as always, you can post questions or comments here or on the TechNet Wiki. Regards, The StreamInsight Team

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  • Why is filesystem preferred for logs instead of RDBMS?

    - by Yasir
    Question should be clear from its title. For example Apache saves its access and error logs in files instead of RDBMS no matter on how large or small scale it is being utilized. For RDMS we just have to write SQL queries and it will do the work while for files we must decide a particular format and then write regex or may be parsers to manipulate them. And those might even fail in particular circumstances if great care was not paid. Yet everyone seems to prefer filesystem for maintaining the logs. I am not biased against any of these methods but I would like to know why it is practiced like this. Is it speed or maintainability or something else?

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  • What is the most effective order to learn SQL Server, LINQ, and Entity Framework?

    - by user1525474
    I am trying to get some advice on what order I should learn about SQL Server, LINQ, and Entity Framework to be able to better work with ASP.NET Webforms and MVC. From what I've been able to learn so far, many recommend learning LINQ or Entity Framework before learning SQL Server. It also appears that many companies are looking for people with knowledge in LINQ-to-SQL and Entity Framework without mentioning SQL Server. However, my understanding is that LINQ-to-SQL and Entity Framework translate code into SQL Server queries, making this a poor approach. Is there a correct or best order in which to learn these technologies?

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  • How do I edit my resolv.conf file?

    - by Ahatius
    I have the problem that my ubuntu machine uses the wrong dns server. For some reason he queries localhost for dns records. I have added the dns server in the network settings gui, but /etc/resolv.conf still contains 127.0.0.1 as dns server. Now I tought I could just edit the file by myself, but it explicitly says I should not edit the file by hand. Now, since the network settings GUI didn't generate the file with the right settings, how do I generate a new resolv.conf file by myself?

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  • Heading in the Right Direction: Garmin Exadata adoption

    - by Javier Puerta
    A pioneer in global positioning system (GPS) navigation, Garmin International Inc. has been adopting Exadata to support the infrastructure that powered the company’s Oracle Advanced Supply Chain Planning, but also the company’s fitness segment, which provides customers with an online platform to store, retrieve, and interact with data captured using Garmin fitness products. The environment, which is built on an Oracle Database, processes approximately 40 million queries per week. Prior to using Oracle Exadata Database Machine, as the online offering grew in popularity, it began to face reliability issues that had negatively impacted the customer experience. We included the video testimonial in a previous post. Now you can find the a complete set of materials about this customer story Garmin Customer Reference Garmin video testimonial:  Garmin Consolidates on Exadata for 50% Performance Boost Profit Magazine article:  Heading in the Right Direction

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  • How do I prevent useless content load on the page in responsive design?

    - by Ícaro Leandro
    In responsive design, elements are hidden in the page with @media queries and display: none in CSS. Ok. In my design however browsers that have less than 800px in width should avoid loading some content at all. When accessed with on a device with more than 800px of screen, the page loads fully. In mobile devices or even on desktop with less than 800px of width some content is hidden. I want to make the page load faster for low-resolution devices and avoid loading chunks of content that the user will never see. How can I go about this?

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  • How to check that I have recovered from Penguin 2.0?

    - by Simon Walker
    I have 3 year old website which has been hit by Penguin 2.0 in May. The website traffic dropped almost 30%. I have been working hard from last 2.5 months on the website and my website's traffic recovered in last week of August. In fact, I am receiving more traffic then ever. When I look at the stats, I find my website's search engine visibility has been improved. It is now appearing for more search queries. My website's impressions have also increased. What I am worried about is that my website is nowhere in top 5 pages for keywords having high competition and carrying the highest search volume. They are few in number but important. Should I consider my current situation as recovery or it's just the partial recovery? If it is only partial, then how come traffic is more then it was before penguin 2.0?

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  • What use is a Business Logic Layer (BLL)?

    - by Andrew S. Arnold
    In reading up on good practice for database applications I've frequently come across advocates of so-called "business logic layers" and I'm trying to decide if it's best for my project to use one (it's a small personal project). My issue lies in the fact that I can't think of anything for the BLL to do that the DAL can't already handle (executing queries and mapping results to objects), so my BLL just calls the DAL without doing anything itself. Maybe I'm wrong about exactly what the DAL should be doing too. But regardless, what sorts of functionality should be expected of a BLL in a database management application?

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  • How to structure a set of RESTful URLs

    - by meetamit
    Kind of a REST lightweight here... Wondering which url scheme is more appropriate for a stock market data app (BTW, all queries will be GETs as the client doesn't modify data): Scheme 1 examples: /stocks/ABC/news /indexes/XYZ/news /stocks/ABC/time_series/daily /stocks/ABC/time_series/weekly /groups/ABC/time_series/daily /groups/ABC/time_series/weekly Scheme 2 examples: /news/stock/ABC /news/index/XYZ /time_series/stock/ABC/daily /time_series/stock/ABC/weekly /time_series/index/XYZ/daily /time_series/index/XYZ/weekly Scheme 3 examples: /news/stock/ABC /news/index/XYZ /time_series/daily/stock/ABC /time_series/weekly/stock/ABC /time_series/daily/index/XYZ /time_series/weekly/index/XYZ Scheme 4: Something else??? The point is that for any data being requested, the url needs to encapsulate whether an item is a Stock or an Index. And, with all the RESTful talk about resources I'm confused about whether my primary resource is the stock & index or the time_series & news. Sorry if this is a silly question :/ Thanks!

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  • Concurrency checking with Last Change Time

    - by Lijo
    I have a following three tables Email (emailNumber, Address) Recipients (reportNumber, emailNumber, lastChangeTime) Report (reportNumber, reportName) I have a C# application that uses inline queries for data selection. I have a select query that selects all reports and their Recipients. Recipients are selected as comma separacted string. During updating, I need to check concurrency. Currently I am using MAX(lastChangeTime) for each reportNumber. This is selected as maxTime. Before update, it checks that the lastChangeTime <= maxTime. --//It works fine One of my co-developers asked why not use GETDATE() as “maxTime” rather than using a MAX operation. That is also working. Here what we are checking is the records are not updated after the record selection time. Is there any pitfalls in using GETDATE() for this purpose?

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  • Google I/O 2010 - Writing zippy Android apps

    Google I/O 2010 - Writing zippy Android apps Google I/O 2010 - Writing zippy Android apps Android 201 Brad Fitzpatrick Come hear tips & war stories on making fast, responsive (aka "non-janky") Android apps. No more ANRs! Eliminate event loop stalls! Fast start-ups! Optimized database queries with minimal I/O! Also, learn about the tools and techniques we use to find performance problems across the system and hear what's coming in the future. For all I/O 2010 sessions, please go to code.google.com From: GoogleDevelopers Views: 3 0 ratings Time: 57:38 More in Science & Technology

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  • My colleague can't visit our website through her provider after long downtime

    - by Peter Westerlund
    We did a frontpage update some days ago that caused the site to crash. The site was down for several hours. After troubleshooting, we concluded that we needed to cache more content. It had been run too many queries. After solving that and rebooting of server, we here in Sweden and Norway were again able to visit the site. But a colleague in Tunisia couldn't. It seems to work from another internet provider but not her own. What could have happened? And what should we do? Edit: I should add: She is able to visit the site through tunnel at anonymouse.org.

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  • Persisting natural language processing parsed data

    - by tjb1982
    I've recently started experimenting with natural language processing (NLP) using Stanford's CoreNLP, and I'm wondering what are some of the standard ways to store NLP parsed data for something like a text mining application? One way I thought might be interesting is to store the children as an adjacency list and make good use of recursive queries (Postgres supports this and I've found it works really well). But I assume there are probably many standard ways to do this depending on what kind of analysis is being done that have been adopted by people working in the field over the years. So what are the standard persistence strategies for NLP parsed data and how are they used?

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  • How to perform efficient 2D picking in HTML5?

    - by jSepia
    I'm currently using an R-Tree for both picking and collision testing. Each entity on screen has a bounding box for collisions and a separate one for picking. Since entities may change position very frequently, both trees must be updated/reordered once per frame. While this is very efficient for collisions, because the tree is used in hundreds of collision queries every frame, I'm finding it too costly for picking, because it only gets queried when the user clicks, thus leading to a lot of wasted tree updates. What would be a more efficient way to implement picking without as much overhead?

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