ATabase> (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. . (2004-02-17)