InfoQ Homepage Data Access Content on InfoQ
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Named Resource Streams for WCF Data Services
Under the current version of WCF Data Services, developers can associate only one streaming resource with a given entity. With the October 2010 CTP, developers can now add additional named streams to an entity. For example, for images you may have streams named “Thumbnail”, “Small”, and “Full”.
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MySQL Changes: More Expensive and No InnoDB for the Classic Edition
Oracle has published a new comparison table for the MySQL Editions offered with support. Major changes include a rise of the price and InnoDB is removed from the Classic Edition.
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DB2 Debugging in Visual Studio 2010
IBM is offering a demo of their DB2 Add-ins for Visual Studio 2010. In addition to "full end to end debugging for SQL procedures for VB and C# apps”, it includes ADO.NET and Entity Framework providers for many of the DB2 variants.
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IBM Cuts DB 2 Prices While Oracle Raises the Cost of MySQL
MySQL and DB2 are a lot alike. Both are free to start, but to get the tools needed to properly support them you have to buy subscriptions form the vendor. At the same time that Oracle is raising MySQL’s subscription to 3,000 per server, IBM is dropping DB2 to 1,500 per server.
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Apache Cayenne 3.0 Supports Remote Object Persistence and ORM Modeling Tools
The new version of Apache Cayenne, an open source Java framework for object relational mapping and persistence, supports Remote Object Persistence and ORM Modeling Tools. InfoQ spoke with Cayenne project leads about the new features of the framework.
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EffiProz: A Cross-Platform Embedded Database for .NET Programmers
EffiProz is an embedded database written entirely in C# that can has both a disk-based and a memory-only mode. This has allowed its developers to port it to most environments that have CLR including .NET Compact, Mono, Windows 7, and Silverlight. The next version will extend this to mobile platforms.
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CouchDB Comes to Android
Couchio, the company founded by Damien Katz, creator of CouchDB, has announced the release of CouchDB SDK for Android, a mobile version of the document database that can be used offline.
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Migrating from MySQL/Access to SQL Server/Azure with SSMA
Microsoft has released the SQL Server Migration Assistant (SSMA) for MySQL 1.0, and has refreshed SSMA for Oracle v4.2, SSMA for Sybase v4.2, and SSMA for Access v4.2. These toolkits helps customers migrating their MySQL/Oracle/Sybase/Access databases to SQL Server and some even to SQL Azure.
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The Latest NHibernate Developments
The latest NHibernate developments include: the release of NHibernate 3.0.0 Alpha 1, NHibernate Profiler supporting NHibernate 3.0, and HQL Language Service for Visual Studio.
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Introducing Microsoft’s Dynamically Typed Data Access Library
In conjunction with WebMatrix, Microsoft’s new tool chain for amateur web developers, Microsoft is releasing a dynamically type data access library. Similar to the Jasper project, this library trades the performance for ease of use. The result is an ORM-like API, but without the overhead of configuration files or code-generated classes.
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Microsoft Drops Quadrant
Mary Jo Foley is reporting that Microsoft is dropping Quadrant and is revising its plans for its M data-modeling language.
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EF Feature CTP 4 Brings Code First Updates and Productivity Improvements
Entity Framework Feature CTP 4 recently released updates the Code First programming model with new code conventions and data annotations, and adds two new types, DbContext and DbSet<TEntity>, providing easy entity model setup using Code First.
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Facebook on Hadoop, Hive, HBase, and A/B Testing
The Hadoop Summit of 2010 included presentations from a number of large scale users of Hadoop and related technologies. Notably, Facebook presented a keynote and details information about their use of Hive for analytics. Mike Schroepfer, Facebook's VP of Engineering delivered a keynote describing the scale of their data processing with Hadoop.
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NoRM: Another .NET Provider for MongoDB
NoRM is a .NET library acting as a wrapper around MongoDB, facilitating .NET programming against the mentioned document database. Some of the features are: strongly-typed interface, supporting LINQ, supporting both .NET and Mono.
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Emergent Data Architectures Highlights From GigaOm Structure Conference
The GigaOM Stucture conference a couple of weeks ago addressed many areas of cloud computing. One of the key themes of the event was the emergence of new data architectures. Throughout the panels, interviews, and presentations many speakers identified significant changes in how data gets handled that will be coming.