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  • Linq to SQL Lazy Loading in ASP.Net applications

    - by nikolaosk
    In this post I would like to talk about LINQ to SQL and its native lazy loading functionality. I will show you how you can change this behavior. We will create a simple ASP.Net application to demonstrate this. I have seen a lot of people struggling with performance issues. That is mostly due to the lack of knowledge of how LINQ internally works.Imagine that we have two tables Products and Suppliers (Northwind database). There is one to many relationship between those tables-entities. One supplier...(read more)

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  • Video White Paper: Mega-Project Management: Reducing Risk & Complexity across the Value Chain

    - by Melissa Centurio Lopes
    Watch this short video white paper, to learn how Oracle Primavera can help you keep projects on track and protect your investments. You can also download the full white paper “Mega-Project Management: Reducing Risk & Complexity Across the Value Chain” to gain more in depth information about strategies for collaborating and sharing information and data in a systematic way across the value chain. Download the white paper in order to learn how your company can get the expected payoff from your next mega project. Register now to download the full complementary white paper, and discover how to: Improve decision-making and accountability through enterprise-wide visibility, workflows, and collaboration Reduce financial and performance risk

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  • Need clarification concerning Windows Azure

    - by SnOrfus
    I basically need some confirmation and clarification concerning Windows Azure with respect to a Silverlight application using RIA Services. In a normal Silverlight app that uses RIA services you have 2 projects: App App.Web ... where App is the default client-side Silverlight and app.web is the server-side code where your RIA services go. If you create a Windows Azure app and add a WCF Web Services Role, you get: App (Azure project) App.Services (WCF Services project) In App.Services, you add your RIA DomainService(s). You would then add another project to this solution that would be the client-side Silverlight that accesses the RIA Services in the App.Services project. You then can add the entity model to the App.Services or another project that is referenced by App.Services (if that division is required for unit testing etc.) and connect that entity model to either a SQLServer db or a SQLAzure instance. Is this correct? If not, what is the general 'layout' for building an application with the following tiers: UI (Silverlight 4) Services (RIA Services) Entity/Domain (EF 4) Data (SQL Server)

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  • How to achieve a Gaussian Blur effect for shadows in LWJGL/Slick2D?

    - by user46883
    I am currently trying to implement shadows into my game, and after a lot of searching in the interwebs I came to the conclusion that drawing hard edged shadows to a low resolution pass combined with a Gaussian blur effect would fit best and make a good compromise between performance and looks - even though theyre not 100% physically accurate. Now my problem is, that I dont really know how to implement the Gaussian blur part. Its not difficult to draw shadows to a low resolutions buffer image and then stretch it which makes it more smooth, but I need to add the Gaussian blur effect. I have searched a lot on that and found some approachs for GLSL, some even here, but none of them really helped it. My game is written in Java using Slick2D/LWJGL and I would appreciate any help or approaches for an algorithm or maybe even an existing library to achieve that effect. Thanks for any help in advance.

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  • Game-oriented programming language features/objectives/paradigm?

    - by Klaim
    What are the features and language objectives (general problems to solves) or paradigms that a fictive programming language targetted at games (any kind of game) would require? For example, obviously we would have at least Performance (in speed and memory) (because a lot of games simply require that), but it have a price in the languages we currently use. Expressivity might be a common feature that is required for all languages. I guess some concepts from not-usually-used-for-games paradigms, like actor-based languages, or language-based message passing, might be useful too. So I ask you what would be ideal for games. (maybe one day someone will take those answers and build a language over it? :D ) Please set 1 feature/objective/paradigm per answer. Note: maybe that question don't make sense to you. In this case please explain why in an answer. It's a good thing to have answers to this question that might pop in your head sometimes.

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  • Should I use C style in C++?

    - by c.hughes
    As I've been developing my position on how software should be developed at the company I work for, I've come to a certain conclusion that I'm not entirely sure of. It seems to me that if you are programming in C++, you should not use C style anything if it can be helped and you don't absolutely need the performance improvement. This way people are kept from doing things like pointer arithmetic or creating resources with new without any RAII, etc. If this idea was enforced, seeing a char* would possibly be a thing of the past. I'm wondering if this is a conclusion others have made? Or am I being too puritanical about this?

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  • SQLBits - Fusion IO and Attunity confirmed as exhibitors

    - by simonsabin
    We are very excited that Attunity are going to be exhibiting at SQLBits VI, they must have a great product because any client I see that is integrating SQL with other stores such as DB2 and Oracle seem to be using Attunity's providers. On top of that we have a new exhibitor. Fusion IO will be coming along and I hope will be bringing some amazing demos of their kit. SSD storage is the future and Fusion IO are at the top of the game. Many in the SQL community have said that SSD for tempdb is just awesome, come and have a chat with the guys to talk about your high performance storage needs.

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  • SQLBits - Fusion IO and Attunity confirmed as exhibitors

    - by simonsabin
    We are very excited that Attunity are going to be exhibiting at SQLBits VI, they must have a great product because any client I see that is integrating SQL with other stores such as DB2 and Oracle seem to be using Attunity's providers. On top of that we have a new exhibitor. Fusion IO will be coming along and I hope will be bringing some amazing demos of their kit. SSD storage is the future and Fusion IO are at the top of the game. Many in the SQL community have said that SSD for tempdb is just awesome, come and have a chat with the guys to talk about your high performance storage needs.

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  • How to control CPU frequency

    - by Tim
    I am using CPU Frequency Scaling Monitor 2.30.0 on the panel to show and control CPU frequency. My CPU frequency by default will change according to load. But I want to make CPU work at the lowest level and so I choose 800 MHz in CPU Frequency Scaling Monitor. After a few seconds, however, it automatically changes back to Powersave or Performance mode which has automatic adjustment to CPU frequency. I was wondering how to actually make CPU work at the lowest level? Thanks!

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  • Semi-blocking Transformations in SQL Server Integration Services SSIS

    In a SSIS data flow, there are multiple types of transformations. On one hand you have synchronous and asynchronous transformations, but on the other hand you have non-blocking, semi-blocking and fully-blocking components. In this tip, Koen Verbeeck takes a closer look on the performance impact of semi-blocking transformations in SSIS. Can 41,000 DBAs really be wrong? Join 41,000 other DBAs who are following the new series from the DBA Team: the 5 Worst Days in a DBA’s Life. Part 3, As Corrupt As It Gets, is out now – read it here.

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  • SSAS Maestro Training in July 2012 #ssasmaestro #ssas

    - by Marco Russo (SQLBI)
    A few hours ago Chris Webb blogged about SSAS Maestro and I’d like to propagate the news, adding also some background info. SSAS Maestro is the premier certification on Analysis Services that selects the best experts in Analysis Services around the world. In 2011 Microsoft organized two rounds of training/exams for SSAS Maestros and up to now only 11 people from the first wave have been announced – around 10% of attendees of the course! In the next few days the new Maestros from the second round should be announced and this long process is caused by many factors that I’m going to explain. First, the course is just a step in the process. Before the course you receive a list of topics to study, including the slides of the course. During the course, students receive a lot of information that might not have been included in the slides and the best part of the course is class interaction. Students are expected to bring their experience to the table and comparing case studies, experiences and having long debates is an important part of the learning process. And it is also a part of the evaluation: good questions might be also more important than good answers! Finally, after the course, students have their homework and this may require one or two months to be completed. After that, a long (very long) evaluation process begins, taking into account homework, labs, participation… And for this reason the final evaluation may arrive months later after the course. We are going to improve and shorten this process with the next courses. The first wave of SSAS Maestro had been made by invitation only and now the program is opening, requiring a fee to participate in order to cover the cost of preparation, training and exam. The number of attendees will be limited and candidates will have to send their CV in order to be admitted to the course. Only experienced Analysis Services developers will be able to participate to this challenging program. So why you should do that? Well, only 10% of students passed the exam until now. So if you need 100% guarantee to pass the exam, you need to study a lot, before, during and after the course. But the course by itself is a precious opportunity to share experience, create networking and learn mission-critical enterprise-level best practices that it’s hard to find written on books. Oh, well, many existing white papers are a required reading *before* the course! The course is now 5 days long, and every day can be *very* long. We’ll have lectures and discussions in the morning and labs in the afternoon/evening. Plus some more lectures in one or two afternoons. A heavy part of the course is about performance optimization, capacity planning, monitoring. This edition will introduce also Tabular models, and don’t expect something you might find in the SSAS Tabular Workshop – only performance, scalability monitoring and optimization will be covered, knowing Analysis Services is a requirement just to be accepted! I and Chris Webb will be the teachers for this edition. The course is expensive. Applying for SSAS Maestro will cost around 7000€ plus taxes (reduced to 5000€ for students of a previous SSAS Maestro edition). And you will be locked in a training room for the large part of the week. So why you should do that? Well, as I said, this is a challenging course. You will not find the time to check your email – the content is just too much interesting to think you can be distracted by something else. Another good reason is that this course will take place in Italy. Well, the course will take place in the brand new Microsoft Innovation Campus, but in general we’ll be able to provide you hints to get great food and, if you are willing to attach one week-end to your trip, there are plenty of places to visit (and I’m not talking about the classic Rome-Florence-Venice) – you might really need to relax after such a week! Finally, the marking process after the course will be faster – we’d like to complete the evaluation within three months after the course, considering that 1-2 months might be required to complete the homework. If at this point you are not scared: registration will open in mid-April, but you can already write to [email protected] sending your CV/resume and a short description of your level of SSAS knowledge and experience. The selection process will start early and you may want to put your admission form on top of the FIFO queue!

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  • Oracle Database 11g Release 2 is SAP certified for Unix and Linux platforms.

    - by jenny.gelhausen
    SAP announces certification of Oracle Database 11g Release 2 on all available UNIX and Linux platforms. This certification comes along with the immediate availability of the following important options and features: * Advanced Compression Option (table, RMAN backup, expdp, DG Network) * Real Application Testing * Oracle Database 11g Release 2 Database Vault * Oracle Database 11g Release 2 RAC * Advanced Encryption for tablespaces, RMAN backups, expdp, DG Network * Direct NFS * Deferred Segments * Online Patching All above functionality has been fully integrated within the SAP products so they can be utilized and managed from within the SAP solution stack. All required migration steps can be done fully online. Learn why Oracle is the #1 Database for Deploying SAP Applications SAP Certification announcement var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www."); document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E")); try { var pageTracker = _gat._getTracker("UA-13185312-1"); pageTracker._trackPageview(); } catch(err) {}

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  • Oracle VM Templates Enable Oracle Real Application Clusters Deployment Up to 10 Times Faster than VMware vSphere

    - by Angela Poth
    Oracle VM - Quantifying the Value of Application-Driven DeploymentThe recently published report by the Evaluator Group, “Oracle VM – Quantifying The Value of Application-Driven Virtualization,“ validates Oracle’s ease of use and time savings over VMware vSphere 5. The report found that users can deploy Oracle Real Application Clusters up to 10 times faster with Oracle VM templates than VMware vSphere. Using Oracle VM templates users can deploy E-Business Suites nearly 7 times faster than VMware vSphere."Oracle VM’s application-driven architecture was built to enable rapid deployment of enterprise applications, with simplified integrated lifecycle management, to fully support Oracle applications. Our testing has demonstrated 90 percent improvement deploying Oracle Real Application Clusters 11g R2 using Oracle VM Templates and a similar improvement of 85 percent for the Oracle E-Business Suite 12.1.1. This clearly shows that Templates can provide real value to customers and should become an essential component for enabling rapid enterprise application deployment and management," said Leah Schoeb, Senior Partner, Evaluator Group.Read the Press Release Get a copy of the Evaluator Group Report: Oracle VM – Quantifying The Value of Application-Driven Virtualization

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  • How Circuit Boards Are Manufactured and Tested [Video]

    - by Jason Fitzpatrick
    Circuit boards are in nearly everything: computers, cars, toys, phones, even greeting cards. Check out this tour of Printed Circuit Board (PCB) factory to see how they’re made. In the above video the owners of Base2 Electronics are watching a PCB testing machine at the factory where they purchase their boards for resale. The machine is first scanning the board to identify it in the board database and then the arms start flying as it tests individual circuits on the board. If you’re interested seeing all the steps of the manufacturing process, hit up the link below for a photo and video tour of the facility. Base2 Electronics Tour of Advanced Circuits [via Hack A Day] How To Encrypt Your Cloud-Based Drive with BoxcryptorHTG Explains: Photography with Film-Based CamerasHow to Clean Your Dirty Smartphone (Without Breaking Something)

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  • Showing schema.org aggregate rating in Google rich snippets

    - by nickh
    After adding schema.org microdata markup for reviews and aggregate ratings, I expected review and rating information to show up in rich snippets. Unfortunately, neither are being shown. Google's Structured Data Testing Tool finds the microdata, and there're no errors or warnings on the page. Any idea what's wrong with the microdata markup? Example 1: Live Page: http://www.shelflife.net/ljn-thundercats-series-3/bengali Google Test: http://www.google.com/webmasters/tools/richsnippets?q=http%3A%2F%2Fwww.shelflife.net%2Fljn-thundercats-series-3%2Fbengali Example 2: Live Page: http://www.shelflife.net/star-wars-mighty-muggs/asajj-ventress Google Test: http://www.google.com/webmasters/tools/richsnippets?q=http%3A%2F%2Fwww.shelflife.net%2Fstar-wars-mighty-muggs%2Fasajj-ventress

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  • Top 10 Reasons to Use MySQL and MySQL Cluster as an Embedded Database

    - by Rob Young
    If you are considering using MySQL and/or MySQL Cluster as the embedded database solution for your application, you should join us for today's webcast where we will discuss how you can cut costs, add flexibility and benefit from new performance and scalability enhancements that are now available in MySQL 5.6 and MySQL Cluster 7.2.  We will cover the top 10 reasons that make MySQL and MySQL Cluster the best solutions for embedding in both shrink wrapped and SaaS provided applications, how industry leaders leverage MySQL products and how you can get started with the latest innovations and support offerings across the MySQL product line. You can learn more and reserve your seat here. As always, thanks for your support of MySQL!

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  • Switching CSS to use asset pipeline in Rails?

    - by John
    I have a lot of legacy CSS files from what was a Rails 2.x app that got upgraded to Rails 3.2.8, and I want to switch over to using the Rails asset pipeline for stylesheets. The issue is, the CSS stuff is messy in terms of huge lines of code, duplicate file names, and unorganized folder structure. After looking through individual pages, and trying to add individual stylesheets and folders into the asset pipeline and spending some cycles debugging, I realized there's probably a better approach. Is there a way to test to make sure the old CSS matches up with the asset pipeline CSS? What are some good tools for testing and debugging CSS?

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  • Dude, where is my list instance?

    - by MOSSLover
    I saw an MSDN Forum post today, so I looked for a ListInstance Hidden property in SharePoint 2007 features.  There is none, but interestingly enough there is one in 2010.  I wondered what would happen if you did this: <Elements xmlns="http://schemas.microsoft.com/sharepoint/">   <ListInstance            FeatureId="00bfea71-de22-43b2-a848-c05709900100"            Title="Hidden List Test"            Description="Testing a hidden list."            TemplateType="100"            Hidden="TRUE"            OnQuickLaunch="FALSE"            Url="Lists/TestHidden" /> </Elements> It hides the entire list from SharePoint Designer and the browser, however you can hit the list by typing in the url in internet explorer.  Pretty cool stuff.  Enjoy guys. Technorati Tags: Feature,List Instance,SharePoint 2010

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  • Using Hadooop (HDInsight) with Microsoft - Two (OK, Three) Options

    - by BuckWoody
    Microsoft has many tools for “Big Data”. In fact, you need many tools – there’s no product called “Big Data Solution” in a shrink-wrapped box – if you find one, you probably shouldn’t buy it. It’s tempting to want a single tool that handles everything in a problem domain, but with large, complex data, that isn’t a reality. You’ll mix and match several systems, open and closed source, to solve a given problem. But there are tools that help with handling data at large, complex scales. Normally the best way to do this is to break up the data into parts, and then put the calculation engines for that chunk of data right on the node where the data is stored. These systems are in a family called “Distributed File and Compute”. Microsoft has a couple of these, including the High Performance Computing edition of Windows Server. Recently we partnered with Hortonworks to bring the Apache Foundation’s release of Hadoop to Windows. And as it turns out, there are actually two (technically three) ways you can use it. (There’s a more detailed set of information here: http://www.microsoft.com/sqlserver/en/us/solutions-technologies/business-intelligence/big-data.aspx, I’ll cover the options at a general level below)  First Option: Windows Azure HDInsight Service  Your first option is that you can simply log on to a Hadoop control node and begin to run Pig or Hive statements against data that you have stored in Windows Azure. There’s nothing to set up (although you can configure things where needed), and you can send the commands, get the output of the job(s), and stop using the service when you are done – and repeat the process later if you wish. (There are also connectors to run jobs from Microsoft Excel, but that’s another post)   This option is useful when you have a periodic burst of work for a Hadoop workload, or the data collection has been happening into Windows Azure storage anyway. That might be from a web application, the logs from a web application, telemetrics (remote sensor input), and other modes of constant collection.   You can read more about this option here:  http://blogs.msdn.com/b/windowsazure/archive/2012/10/24/getting-started-with-windows-azure-hdinsight-service.aspx Second Option: Microsoft HDInsight Server Your second option is to use the Hadoop Distribution for on-premises Windows called Microsoft HDInsight Server. You set up the Name Node(s), Job Tracker(s), and Data Node(s), among other components, and you have control over the entire ecostructure.   This option is useful if you want to  have complete control over the system, leave it running all the time, or you have a huge quantity of data that you have to bulk-load constantly – something that isn’t going to be practical with a network transfer or disk-mailing scheme. You can read more about this option here: http://www.microsoft.com/sqlserver/en/us/solutions-technologies/business-intelligence/big-data.aspx Third Option (unsupported): Installation on Windows Azure Virtual Machines  Although unsupported, you could simply use a Windows Azure Virtual Machine (we support both Windows and Linux servers) and install Hadoop yourself – it’s open-source, so there’s nothing preventing you from doing that.   Aside from being unsupported, there are other issues you’ll run into with this approach – primarily involving performance and the amount of configuration you’ll need to do to access the data nodes properly. But for a single-node installation (where all components run on one system) such as learning, demos, training and the like, this isn’t a bad option. Did I mention that’s unsupported? :) You can learn more about Windows Azure Virtual Machines here: http://www.windowsazure.com/en-us/home/scenarios/virtual-machines/ And more about Hadoop and the installation/configuration (on Linux) here: http://en.wikipedia.org/wiki/Apache_Hadoop And more about the HDInsight installation here: http://www.microsoft.com/web/gallery/install.aspx?appid=HDINSIGHT-PREVIEW Choosing the right option Since you have two or three routes you can go, the best thing to do is evaluate the need you have, and place the workload where it makes the most sense.  My suggestion is to install the HDInsight Server locally on a test system, and play around with it. Read up on the best ways to use Hadoop for a given workload, understand the parts, write a little Pig and Hive, and get your feet wet. Then sign up for a test account on HDInsight Service, and see how that leverages what you know. If you're a true tinkerer, go ahead and try the VM route as well. Oh - there’s another great reference on the Windows Azure HDInsight that just came out, here: http://blogs.msdn.com/b/brunoterkaly/archive/2012/11/16/hadoop-on-azure-introduction.aspx  

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  • Telerik Introduces New Developer Tool Designed to Simplify Unit Test Mocking

    JustMock extends Teleriks commitment to providing Visual Studio developer productivity Waltham, MA, April 13, 2010 Telerik, the leading vendor of development tools and user interface components for .NET, today announced the introduction of JustMock, a productivity add-in for Microsoft? Visual Studio 2008 and 2010. JustMock helps developers easily create object mockings in unit tests, saving time and improving the quality of software testing. JustMock is being introduced as a Beta and is scheduled...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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  • Getting Started with Oracle Fusion Procurement

    Designed from the ground-up using the latest technology advances and incorporating the best practices gathered from Oracle's thousands of customers, Fusion Applications are 100 percent open standards-based business applications that set a new standard for the way we innovate, work and adopt technology. Delivered as a complete suite of modular applications, Fusion Applications work with your existing portfolio to evolve your business to a new level of performance. In this AppCast, part of a special series on Fusion Applications, you hear about the unique advantages of Fusion Procurement, learn about the scope of the first release and discover how Fusion Procurement modules can be used to complement and enhance your existing Procurement solutions.

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  • Thoughts of Cloud Development/Google App Engine

    - by jiewmeng
    I use mainly PHP for web development, but recently, I started thinking about using Google App Engine. It doesn't use PHP which I am already familiar with, so there will be a steeper learning curve. Probably using Python/Django. But I think it maybe worthwhile. Some advantages I see: Focus on App/Development. No need to setup/maintain server ... no more server configs Scales automatically Pay for what you use. Free for low usage Reliable, it's Google after all Some concerns though: Does database with no joins pose a problem for those who used App Engine before? Do I have to upload to Google just to test? Will it be slow compared to testing locally? What are your thoughts and opinions? Why would you use or not use App Engine?

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  • Five new junior developers and lots of complex tasks. What's now?

    - by mxe
    Our company has hired five new junior developers to help me to developer our product. Unfortunately the new features and incoming bug fixes usually require deeper knowledge than a recently graduated developer usually has (threading/concurrency, debugging performance bottlenecks in a complex system, etc.) Delegating (and planning) tasks which they (probably) can solve, answering their questions, mentoring/managing them, reviewing their code use up all of my time and I often feel that I could solve the issues less time than the whole delegating process takes (counting only my time). In addition I don't have time to solve the tasks which require deeper system knowledge/more advanced skills and it does not seem that it will change in the near future. So, what's now? What should I do to use their and my time effectively?

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  • Tab Sweep: Logging, WebSocket, NoSQL, Vaadin, RESTful, Task Scheduling, Environment Entries, ...

    - by arungupta
    Recent Tips and News on Java, Java EE 6, GlassFish & more : • Detailed Logging Output with GlassFish Server, Hibernate, and Log4j (wikis.oracle.com) • Serving Static Content on WebLogic and GlassFish (Colm Divilly) • Java EE and communication between applications (Martin Crosnier) • What are the new features in Java EE 6? (jguru) • Standardizing JPA for NoSQL: are we there yet? (Emmanuel) • Create an Asynchronous JAX-WS Web Service and call it from Oracle BPEL 11g (Bob) • Programmatic Login to Vaadin application with JAAS utilizing JavaEE6 features and Spring injection (vaadin) • Is in an EJB injected EntityManager thread-safe? (Adam Bien) • Websocket using Glassfish (demj33) • Designing and Testing RESTful web services [ UML, REST CLIENT ] (Mamadou Lamine Ba) • Glassfish hosting -Revion.com Glassfish Oracle hosting (revion.com) • Task Scheduling in Java EE 6 on GlassFish using the Timer Service (Micha Kops) • JEE 6 Environmental Enterprise Entries and Glassfish (Slim Ouertani) • Top 10 Causes of Java EE Enterprise Performance Problems (Pierre - Hugues Charbonneau)

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  • Accidentally uninstalled Ubuntu 14.04 system settings. How to get them back?

    - by Dan
    Somehow, cleaning up useless software (using software center), I uninstalled Ubuntu "system settings". I did this by mistake. Now I fail to find system settings application using software center (and there are so many items in history...). It seems strange to me because usually when I try to uninstall something critical (system testing for example), the dependencies manager tells me It will uninstall the whole desktop system then. I am sure I did not have that warning. So I need the name of the software to install or a command line command rather than a system restore to get it back. Very interesting thing. If you ever want to play with this and reproduce it, you will be confused to see Ubuntu Mobile system settings instead! Yes, mobile network and touchscreen settings! Happy pre-release viewing!

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