Previous Topic: CREATE TABLENext Topic: Column Constraint Definition


Column Definition

►►─ column-name datatype ─┬─────────────────────────────┬───────────────────►
                          └─ DEFAULT ─┬─ literal ─────┬─┘
                                      ├─ NULL ────────┤
                                      ├─ USER ────────┤
                                      └─ SYSTEM USER ─┘

 ►─┬─────────────────────────┬────────────────────────────────────────────────►◄
   │ ┌─────────────────────┐ │
   └─▼─ column constraint ─┴─┘

SYSTEM USER is a CA Datacom/DB extension.