This method should be overriden by subclasses to restrict tables being removed.
[Visual Basic] Overridable Protected Sub OnRemoveRelation( _ ByVal relation As DataRelation _ ) [C#] protected virtual void OnRemoveRelation( DataRelation relation ); [C++] protected: virtual void OnRemoveRelation( DataRelation* relation ); [JScript] protected function OnRemoveRelation( relation : DataRelation );