DDEX Providers
A data designer extensibility provider (DDEX provider) is an implementation of the DDEX support entities, including XML files for describing the data object hierarchy and their views, Visual Studio command table (.vsct) files, and registry entries.
A DDEX provider implementation enables programmatic access to external data source objects; this allows the data source objects to be exposed in the Visual Studio Server Explorer and to be used on a Visual Studio designer.
Notes
While some similarities exist between a DDEX provider and .NET Framework Data Providers (ADO.NET), a DDEX provider is distinctly different and unique.
A DDEX provider can build upon an underlying technology, such as ADO.NET or OLE DB; alternatively, it can expose a unique data source, such as a text file, an XML file, or any data container whose underlying data structure can be described using XML.
While Visual Studio provides several such extensibility providers "in the box" (see table below), the DDEX SDK provides the managed API and other files with which you can implement your own custom DDEX provider.
DDEX providers included with Visual Studio 2008
Visual Studio ships with DDEX providers that support the following data sources using the specified ADO.NET providers:
Data Source |
Data Providers |
|---|---|
Microsoft SQL Server |
|
Microsoft SQL Server Database File |
|
Microsoft Access Database File |
|
Oracle Database |
|
Microsoft ODBC Data Source |
|
Microsoft SQL Server Mobile Edition |
|
<others> |
|