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Attribute | Definition |
---|---|
name | Required. Holds the foreign key constraint name. The name should follow the naming conventions specified in Naming conventions. |
ref-table | Required for the table name referenced by the foreign key. |
ref-columns | Required. Includes pairs of referencing and referenced columns separated by blanks. |
on-delete | Required. Determines what action is taken if one or more rows in the referencing table point to a row in the referenced table that has been deleted. Can have the following values:
|
on-update | Required. Determines what action is taken if one or more rows in the referencing table point to a row in the referenced table that has been updated. Can have the following values:
|
How to create DDML Documents