If the compiler database has been prepared to accept a new schema with the aid of the BCHANGE utility routine, the current Schema DDL must then be compiled by the DDL compiler, even if the Schema DDL has not been modified.
The compilation procedure is the same as that used for database creation.
Once the Schema DDL has been compiled, the following are available:
an old and a new DBCOM
an old SIA in the DBDIR
an old and a new COSSD.
Command sequence for compiling the current Schema DDL
It is assumed for the command sequence described here that UDS/SQL was installed with IMON (see section "START commands for the UDS/SQL programs").
The commands listed here are described in detail in section "Compiling the Schema DDL".
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It is essential that the DDL compiler should terminate compilation with the message ’NORMAL END’.
If the message ’ABNORMAL END’ is received, compilation must be repeated with corrected DDL clauses.