Microsoft Data Access Components
(MDAC) Microsoft's umbrella term for their ActiveX Data Objects (ADO), OLE DB, and Open Database Connectivity (ODBC) libraries. Together, these provide access to a variety of data sources, both relational (SQL) and nonrelational. MDAC is the technology that supports Universal Data Access, Microsoft's strategy for providing access to information across the enterprise.http://msdn.microsoft.com/library/en-us/mdacsdk/htm/mdacstartpage1.asp.
Last updated: 2004-02-17
Microsoft Data Access Components ♦ Microsoft Disc Operating System
Try this search on Wikipedia, Wiktionary, Google, OneLook.