(1) A local or remote relational or nonrelational data manager that is capable of supporting data access using an ODBC driver that supports the ODBC APIs.
(2) In a federated system, typically a relational database management system (RDBMS) instance and one or more databases that are supported by that instance. A federated system can include other types of data sources, such as flat-file databases and table-structured files.
(3) A DB2 subsystem that is assigned by XCF services to a data sharing group.