As a data source, yes.
DB2 UDB 8.1 FixPak 1+ (including FP7a which is equal to 8.2) via 8.x runtime client Active
DB2 UDB 8.2 via 8.2 runtime client
As a Content Store, some.
IBM UDB 7.2 VIA DB2 7.2 JDBC driver
(not supported for DB2 for z/os or AS/400) Windows/UNIX
IBM UDB 8.1 (including FP7a which is equal to 8.2) via DB2 8 JDBC driver (not supported for DB2 for z/os or AS/400) Windows/UNIX