navidad es todos los dias

tabla, columna, tabla refenciada, columna referenciada, regla de actualizacion y borrado
	select key_column_usage.table_name,key_column_usage.column_name,key_column_usage.referenced_table_name,key_column_usage.referenced_column_name,referential_constraints.update_rule,referential_constraints.delete_rule
		 from key_column_usage join referential_constraints
		 where key_column_usage.constraint_name=referential_constraints.constraint_name;