Define a relational database path name:

       DTR> DEFINE DATABASE CDD$TOP.DEPT29.PERSONNEL ON
       DFN>                 DBA2:[D29.DAT]PERSONNEL.RDB;
       DTR>

       Define a Oracle CODASYL DBMS database instance. The Oracle
       CDD/Repository path name of the schema is
       SYS$COMMON:[CDDPLUS]DBMS.PARTS. The name of the subschema is
       PARTSS1, and the root file is DB0:[BULGAKOV]PARTSDB.ROO:

       DTR> DEFINE DATABASE PARTS_DB
       DFN>     USING PARTSS1
       DFN>     OF SYS$COMMON:[CDDPLUS]DBMS.PARTS
       DFN>     ON DB0:[BULGAKOV]PARTSDB.ROO;
       DTR>