(
ADAptable data
BASe) A database management system (DBMS) from Software AG for IBM mainframes, Linux, Unix and Windows. Adabas is an inverted list DBMS with relational capabilities. A 4GL known as NATURAL plus text retrieval, GIS processing, SQL and distributed database functions are also available. Introduced in 1969, it was one of the first database systems (see
DBMS).