资料来源 : Free On-Line Dictionary of Computing

DB2
     
         A {relational database} from {IBM}.
     
        When running under IBM's MVS ({Multiple Virtual Storage})
        {operating system}, DB2 is implemented on top of {VSAM} and
        uses its underlying data structures.
     
        DB2, later called "DB2 Universal DataBase", also runs under
        {windows NT}, {AIX}, {Solaris} and, most recently, {Linux}.
     
        [Details?  Was there a "DB1"?]
     
        (1999-02-01)