ADO.NET team blog : Oracle

Devart's New Providers Support the ADO.NET Entity Framework!

dpblogs — Fri, 05 Sep 2008 21:05:00 GMT

It is my pleasure to announce the first (to the best of my knowledge) external providers to support the ADO.NET Entity Framework!

Devart (formerly Core Lab) has released a new version of their ADO.NET providers, which includes support for the Entity Framework. For more information, see the following announcement on Devart's web site. Congratulations to the folks at Devart!

http://devart.com/news/2008/directs475.html

With the release of Devart's providers, developers can now acess their Oracle, MySQL and PostgreSQL databases via the Entity Framework. I've downloaded and used their OraDirect.NET provider to successfully run sample queries against an Oracle database using both LINQ and Entity SQL.

Enjoy!

David Sceppa

ADO.NET Program Manager

New sample provider demonstrates Oracle connectivity

dpblogs — Tue, 24 Jun 2008 20:08:00 GMT

As noted on Jaroslaw Kowalski's blog, we have released a new flavor of the ADO.NET Entity Framework sample provider. You can access the Oracle flavor of the sample provider on the Code Gallery site here.

The new sample wraps System.Data.OracleClient instead of System.Data.SqlClient, demonstrating Oracle connectivity from the Entity Framework. We chose to build this second flavor of the sample provider using OracleClient to help the provider writer community as well as to investigate issues that third party provider writers might encounter. As noted in the readme for the OracleClient sample provider, we've addressed many of those issues within the Entity Framework in more recent builds.

The OracleClient flavor of the sample provider also demonstrates some key concepts we wanted to convey to other provider writers such as non-default type mappings, data type coercion in the reader, and canonical functions. For more information on these topics, see Jarek's blog post.

As with the SqlClient flavor of the sample provider, we've chosen a license agreement that we believe will allow most provider writers to leverage the code in the sample to give them a running head start.

Enjoy!

David Sceppa

ADO.NET Program Manager

Entity Framework Provider Updates

dpblogs — Thu, 05 Jun 2008 22:31:00 GMT

Greetings from TechEd!

We've updated the ADO.NET Entity Framework Sample Provider for .NET 3.5 SP1 Beta and posted it at the MSDN Code Gallery site. You can download the sample provider here: http://code.msdn.microsoft.com/EFSampleProvider

Yesterday we held a chalk talk session with many of our provider writer partners. The theater was so full with attendees that we ran out of seats. Representatives from DataDirect, IBM, Oracle and Sybase were in attendance. Over the course of the chalk talk, we addressed a number of general questions before attendees spoke directly with the representatives from the various provider writers. DataDirect announced that they will release an update to their Oracle ADO.NET provider to support the Entity Framework in Q3 of 2008. Both IBM and Sybase demonstrated their provider's accessing their data stores via the Entity Framework.

Reggie Burnett, the lead developer for the MySQL ADO.NET provider, was unable to attend but asked me pass along the following information:

"In the next few days we will be making available a pre-release of version 5.3 with preliminary support for the entity framework as it is found in Visual Studio 2008 SP1 beta. We are firmly committed to supporting this technology and are actively working on it."

David Sceppa

ADO.NET Program Manager

Recent ADO.NET Entity Framework provider news - Demos and downloads

dpblogs — Wed, 07 May 2008 08:23:00 GMT

Here are a few quick announcements about ADO.NET providers supporting the Entity Framework. Enjoy!

Core Lab (Connectivity to Multiple Data Stores)

Core Lab was the first ADO.NET provider writer to support Beta 3 of the Entity Framework. Their provider includes connectivity to Oracle, MySQL, PostgreSQL and SQLite databases. For more information, see the announcement on the following pages: http://crlab.com/news/2007/directs430.html and http://crlab.com/news/2008/dcsqlite100.html.

IBM

IBM has released a public beta for their ADO.NET provider that works with Beta 3 of the Entity Framework. For more information, see the announcement on the following page: http://www-128.ibm.com/developerworks/forums/thread.jspa?threadID=203893. IBM also demonstrated their provider in an end-to-end application building scenario using the Entity Framework designer at recent VS Live conference in San Francisco.

MySQL

At the recent MySQL conference in Santa Clara, Reggie Burnett and I co-presented a session talking about MySQL, LINQ and the ADO.NET Entity Framework. As part of the session, we demonstrated using LINQ, Entity SQL and ADO.NET Data Services to access a MySQL database using Beta 3 of the Entity Framework.

Note: Big thanks to Reggie for helping to make this demo work even after injuring his knee. Get well soon.

Npgsql (PostgreSQL connectivity)

Npgsql has released a beta of their PostgreSQL ADO.NET provider that works with Beta 3 of the Entity Framework. You can download the provider at the following page: http://pgfoundry.org/frs/download.php/1730/Npgsql2.0beta3-bin-EntityFrameworkBeta3.zip. For more information on the release, please see the following page: http://pgfoundry.org/forum/forum.php?forum_id=1307.

David Sceppa

ADO.NET Program Manager