dba_exists Check whether key exists &reftitle.description; booldba_exists stringarraykey Dba\Connectiondba dba_exists checks whether the specified key exists in the database. &reftitle.parameters; key The key the check is performed for. dba &dba.parameter.dba; &reftitle.returnvalues; Returns &true; if the key exists, &false; otherwise. &reftitle.changelog; &Version; &Description; &dba.changelog.dba-object; &reftitle.seealso; dba_delete dba_fetch dba_insert dba_replace