Specifying RESTRICT Mode
The RESTRICT keyword can control the drop operation for supertables,
for tables that have referential constraints and views defined on
them, or for tables that have violations and diagnostics tables associated
them. Using the RESTRICT option causes the drop operation to fail
and an error message to be returned if any of the following conditions
are true:
- Existing referential constraints reference table.
- Existing views are defined on table.
- Any violations tables or diagnostics tables are associated with table.
- The table is the supertable in an inheritance hierarchy.