[Exist-open] Another indexing question

[Greg B. <bar...@gm...>]

Hi All,

I have a bunch of <Entity> and <Event> elements -- see below, all very
similar.
I retrieve these elements quite frequently.
They are identified by the "URI" attributes -- which are indexed and not
unique.
Is there any reason to do an index on these?
I currently have:
        <create qname="Event" type="xs:string"/>
        <create qname="Entity" type="xs:string"/>
as indexes.

    <Entity name="Environmental Protection Agency" URI="
http://d.opencalais.com/genericHasher-1/f863f041-5b94-3d97-a9e1-9861afae21c8"
type="Organization">
        <nationality>N/A</nationality>
        <organizationtype>governmental civilian</organizationtype>
        <docURI>
http://d.opencalais.com/dochash-1/0165b190-57b6-3caf-afb7-56afacb9aa0d
</docURI>
    </Entity>

   <Event name="PersonCareer" URI="
http://d.opencalais.com/genericHasher-1/db700d9a-e702-3a51-9fa7-4a6c4b5dc879"
type="PersonCareer">
        <status>current</status>
        <careertype>professional</careertype>
        <company URI="
http://d.opencalais.com/comphash-1/bf597d07-d34c-3d21-bd3c-c6b7a502ef04"/>
        <Subject URI="
http://d.opencalais.com/pershash-1/d23dc32b-c307-3db1-81f2-08fefcc89660"/>
        <docURI>
http://d.opencalais.com/dochash-1/114f9978-9abc-3dfe-addb-6af375594395
</docURI>
    </Event>

Thank you,

-- 
Greg Bardwell

bar...@gm...