The TSO attachment facility is the default and most frequently used interface. This interface is used in both foreground and background modes and all programs that use the TSO attachment must run under TSO. The reverse, however, is not true, as programs running under TSO may use the TSO attachment facility, CAF, or RRSAF.
The TSO attachment facility provides the main interface to DB2 for developers and administrators. Running in the TSO foreground environment, programs can be invoked by ISPF panels or use the Dialog Manager interfaces. Programs can be tested interactively using the TSO TEST command or the IBM Debug Tool.
Many of the DSN subcommands, like BIND, are necessary for implementation of application programs. The DB2I ...