Microsoft Data Access Components

Windows Data Access Components (WDAC)

With Windows Vista and Windows Server 2008, Microsoft changed the name from MDAC to WDAC (= Windows Data Access Components).

WDAC is included as part of the operating system.

Note that WDAC is also the abbreviation for Windows Defender Application Control.

Components

MDAC/WDAC consists of the following components:

ODBC
OLE DB
ADO
ADOMD (ADO Multi-Dimensional, also known as Microsoft Analysis Services Provider). No major feature enhancements have been made to it since MDAC 2.0.
ADOX
Microsoft SQL Server Network Libraries
MSDASQL, the OLE DB Provider for ODBC

Microsoft SQL Server Network Libraries

SQL Server Network Libraries allow SQLOLEDB and SQLODBC to communicate with the SQL Server database.

Deprecated Microsoft SQL Server Network Libraries:

Banyan Vines
AppleTalk
ServerNet
IPX/SPX
Giganet
RPC

TCP/IP and Named Pipes will continue to be supported and are available on the 64-bit Windows operating system.

MSDASQL

MSDASQL ships with the Windows operating system, and Windows Server 2008 and Vista SP1 were the first Windows releases to include a 64-bit version of the technology.

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