(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)