DatabaseSchema.xml

		<opt platform="mysql">Engine=InnoDB</opt>
	</table>

	<table name="vtiger_app2tab" alter="true">
		<constraint>ADD CONSTRAINT vtiger_app2tab_fk_tab FOREIGN KEY (tabid) REFERENCES vtiger_tab(tabid) ON DELETE CASCADE</constraint>
		<opt>Engine=InnoDB</opt>
	</table>
</schema>