ADABAS definition database
A relational database
system by Software AG
. While it was initially designed for large IBM mainframe
systems (e.g. S/370 in the late 1970s), it has been ported to numerous other platforms
over the last few years such as several flavors of Unix
ADABAS stores its data in tables (and is thus "relational") but also uses some non-relational techniques, such as multiple values and periodic groups.