score:2
DataContext
DataContext is LinqToSql. LinqToSql is for SqlServer only.
Perhaps you meant to use LinqToEntities and ObjectContext?
score:0
If one wants to use LINQ to SQL for RDBMS other than Microsoft SQL Server, a third-party assembly is required. DBLinq is a project that provides LINQ to SQL functionality for other (open-source) databases.
http://code.google.com/p/dblinq2007/
Npgsql can be configured as a db provider for Entity Framework following the documentation on this Npgsql blog:
http://npgsql.com/index.php/2009/08/how-to-set-up-entity-framework-npgsql-part-1/
Source: stackoverflow.com
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