InfoQ Homepage Data Access Content on InfoQ
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eXo Java Content Repository 1.8 Released
The eXo Platform team has released eXo JCR (Java Content Repository) 1.8. The eXo JCR product is a JSR-170-compliant Java content repository implementation.
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Panel: Java Object Persistence: State of the Union
In this panel, the editors of InfoQ.com (Floyd Marinescu) and ODBMS.org (Roberto V. Zicari) asked a group of leading persistence solution architects their views on the current state of the union in persistence in the Java community.
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Microsoft Claims to Hold the ETL Record at 1 TB in 30 Minutes
Microsoft and Unisys are claiming that they hold the record for loading information into a relational database. The unofficial benchmark was 1 TB of TPC-H data moved in under 30 minutes using an Extract, Transform, and Load (ETL) tool. The previous record for that volume was 45 minutes and was held by Informatica.
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LINQ to XSD is Back
A new alpha version of the typesafe LINQ provider, LINQ to XSD, is available. This is the first version compatible with the RTM version of Visual Studio 2008.
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Digging into the Performance of the ADO.NET Entity Framework
The ADO.NET Team recently discussed various performance aspects of the ADO.NET Entity Framework. The ADO.NET Entity Framework entered its third beta back in December and since that time the team has provided developers with information about using the framework but now they are providing developers with the performance aspects.
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LongJump Introduces Database-as-a-Service
LongJump, a provider of customizable business application, has introduced a new service to provide database hosting to companies that are looking to reduce maintenance and administration costs.
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Granite Data Services: Open Source Flex DS Alternative
Granite Data Services (GDS) is an open source alternative to Adobe’s LiveCycle Data Services and the recently open sourced Blaze Data Services. Last week, GDS reached production status with their 1.0 release. GDS is available under the LGPL license. InfoQ.com spoke with the GDS project founder, Franck Wolff, to learn more about the open source project.
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Free ADO.NET Performance Improvements in .NET 2.0 SP 1
Service Pack 1 for .NET 2.0 includes significant performance improvements for ADO.NET. We say they improvements are free because the changes do not require recompiling the code, any user installing the service pack should see at least some gains.
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SQL Server Best Practices Analyzer to be Integrated into SQL Server 2008
Microsoft is looking to change how SQL Server is managed by incorporating the SQL Server Best Practices Analyzer into the core of SQL Server 2008. This new feature, known as the Declarative Management Framework, allows for proactive enforcement of database policies.
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Up and Running with SQLite on .NET in 3 Minutes
SQLite is an open source database that has been growing in popularity. It's footprint is small and is used in a wide-variety of types of applications.
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JPA Frameworks Compared
java.net is hosting an article written by Sharad Acharya titled "Java Persistence Framework: Which, When, and What?" that compares four popular persistence frameworks: CMP Entity EJBs, JPA, Hibernate, and TopLink. Acharya discusses each technology and summarizes his findings in a matrix.
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Presentation: Linda DeMichiel on EJB 3 & JPA
In this talk from last year's QCon London, Linda DeMichiel, who has been leading the EJB spec since the 1.0 days, presents EJB3 with a focus on JPA. The talk covers key aspects of the Java Persistence API and its role in the development of EJB 3.0 apps, including use of the EntityManager API, persistence units and persistence contexts, queries, object/relational mapping, etc.
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InfoQ Interview: Jimmy Nilsson on LINQ to SQL
Floyd interviews Jimmy Nilsson on Microsoft's data access mechanism, LINQ to SQL.
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Presentation: Managing a high performance rails app without tearing your hair out
Rails has gained popularity for its clean implementation of MVC and slick APIs. But what happens when your Rails app grows up, gets popular but can't keep up with requests? This presentation by James Cox will get you started with optimizing web applications by giving practical tips and pointing out common bottlenecks.
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LINQ Grouping Techniques
For the most part LINQ works very much like SQL. Sources, joins, selects, and where clauses are all pretty standard fare. The Group/By/Into clause is where this breaks down. Unlike SQL, which always returns a rectangular dataset, LINQ is capable of returning hierarchical data. This brings new challenges of its own.