Optional: Use this box to specify what action is to
take place on the dependent table when a row of the parent table is
updated. Click on the down arrow and select one of the following
actions:
- No action
- Specifies that an error occurs for the UPDATE operation on the parent
table and no rows are updated. An update rule of NO ACTION is enforced
after other referential constraints. NO ACTION is the default.
- Restrict
- Specifies that an error occurs for the UPDATE operation on the parent
table and no rows are updated. An update rule of RESTRICT is enforced
before all other constraints.
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