SELECT column_name_1, <column_name_2> FROM table_name alias WHERE object_name IS DANGLING;
| Location 1 | The SELECT clause for selecting attributes from the object table |
| Location 2 | The FROM clause for specifying the name of the object table |
| Location 3 | The IS DANGLING clause |
validation_clauses
{ VALIDATE REF UPDATE
[ SET DANGLING TO NULL ]
| VALIDATE STRUCTURE
[ CASCADE { FAST | COMPLETE } ]
[ into_clause ]
{ OFFLINE| ONLINE }
}