A relational DBMS for IBM mainframes, PCs and VAXes from Select Business Solutions, Trumbull, CT (www.selectbs.com). Introduced in the mid-1970s, it was one of the first database systems to provide a non-procedural language for data manipulation. NOMAD can also access data on Oracle, Sybase, DB2 and other databases. Former corporate owners of NOMAD include Thomson Software and the Gores Technology Group.