InfoQ Homepage Data Access Content on InfoQ
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Has JPA Killed the DAO?
Recent developer discussion has explored whether JPA has killed the DAO pattern. DAO supporters argue that it isn't going anywhere soon however.
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Interview: Yahoo's Doug Cutting on MapReduce and the Future of Hadoop
In this special InfoQ interview, Hadoop project lead Doug Cutting discusses MapReduce, the benefits of open source, and the future direction of the project.
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OpenJPA 1.0: Enterprise O/R Mapping with full JPA 1.0 compliance
Apache OpenJPA, an open-source implementation of the Java Persistence API (JPA), recently released version 1.0.0. InfoQ spoke with OpenJPA project lead Patrick Linskey to learn more about this release.
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Michael Stonebraker: Major RDBMSes are legacy technology
Michael Stonebraker, co-founder of the Ingres and Postgres relational database management systems (RDBMS) and CTO of Vertica Systems, laid the framework for a debate in the database community by declaring that most major databases should be considered legacy technology.
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Eclipse Business Intelligence Reporting Tools Version 2.2 Adds MSOffice File Type Output Support
BIRT 2.2 has been recently released with major enhancements as a part of Eclipse Europa release. BIRT is an Eclipse-based open source reporting system for Java and JEE based web applications. Among the new features of 2.2 are enhanced charting featuring and support for XLS, Word, Power Point and Post Script formats.
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Microsoft Entity Framework Beta 2 and Entity Framework Tools Beta 1 CTP Released
The Microsoft Entity Framework allows developers to close the gap between objects and our data stores. The second beta of the Microsoft Entity Framework is available now for developers to get a jump-start on exposing your data models as objects. This release also comes with the first beta of the Entity Framework Tools providing a graphical front-end to your entity data objects.
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JLINQ: Runtime JDBC Generator for Eclipse
Azadeh Ahadian of IBM has published an article introducing JLINQ on IBM's developerWorks site. Despite the name, JLINQ does not have much in common with Microsoft's LINQ, rather it is an Eclipse plugin providing integration with a database and runtime DAO code generation. The plugin is part of IBM's Developer Workbench that is coming with Viper, the next release of DB2.
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LLBLGen Updates O/R Mapper and Code Generator
Solutions Design has recently released LLBLGen Pro v2.5, an O/R mapper and code generator that boasts many new features including auditing, authorization, dependency injection mechanism, super fast and compact serialization (XML and binary), SQLServer CE Desktop support, Sybase support and much more.
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Book Excerpt and Review: Hitchhiker's Guide to Visual Studio and SQL Server
With SQL Server 2000's hitting its end of life date next April, many shops that have been delaying the upgrade to SQL Server 2005 need to start looking at it seriously. This is why we have chosen to review the seventh edition of William Vaughn's Hitchhiker's Guide to Visual Studio and SQL Server.
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Interview: OpenJPA & the JPA spec with Patrick Linskey
OpenJPA is an implementation of the Java Persistence API (JPA) which can be used as a stand-alone POJO persistence layer, or it can be integrated into any EJB3.0 compliant container and many lightweight frameworks. In this interview, Patrick Linskey explains where OpenJPA came from, how it fits into the O/R Mapping space, the JPA specification, and future plans for OpenJPA.
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CodeSmith's PLINQO: Replace & Extend LINQ to SQL
CodeSmith released Professional LINQ to Objects, a set of templates to be used with CodeSmith and Visual Studio 2008 that supplement Microsoft's upcoming LINQ to SQL and have many great features including the ability ot generate or update a LINQ to SQL dbml file from a db schema, generation of LINQ to SQL entity manager & entity classes as well as the DataContext class.
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Do You Need a Data Layer?
With LINQ nearing release, the need for a separate data access layer needs to be reevaluated. Is it still an essential part of an application's design? Or has it become an appendix of the past?
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Data normalization, is it really that good?
Normalization is one of the corner-stones of database design. Recently some discussion emerged on the need for normalization suggesting denormalization as a more scalable solution.
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Using SSIS in a Team Setting
Jamie Tomson talks about his experiences trying to use SQL Server Integration Services in a team environment.
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Digging Deeper Into JBoss MetaMatrix
JBoss' Sacha Labourey has provided a detailed description of development uses of the MetaMatrix technology JBoss acquired in April.