Adabas, a contraction of “adaptable database system,"[1][2] is a database package that was developed by Software AG to run on IBM mainframes. It was launched in 1971 as a non-relational[3] database. As of 2019, Adabas is marketed[4] for use on a wider range of platforms, including Linux, Unix, and Windows.[5]
Adabas can store multiple data relationships in the same table.