(1) An environment that allows full-function databases and DEDBs to be accessed from one or more transaction management subsystems.
(2) An interface between CICS Transaction Server and IMS/ESA that allows access to IMS DL/I full-function databases and to data entry databases (DEDBs) from one or more CICS systems without the need for data sharing. It also provides release independence, virtual storage constraint relief, operational flexibility, and failure isolation.