| width='120' | '''Signature'''
|<pre>index:facets(
$db as xs:string,
$type as xs:string := ()
) as xs:string</pre>
| width='120' | '''Signature'''
|<pre>index:texts(
$db as xs:string, $prefix as xs:string := (),
$ascending as xs:boolean := ()
) as element(value)*</pre>
| width='120' | '''Signature'''
|<pre>index:attributes(
$db as xs:string, $prefix as xs:string := (),
$ascending as xs:boolean := ()
) as element(value)*</pre>