[Zope] Zope catalog query...

Hi, I want to make a "very frequent" query on a ZCatalog. Each object in my Zope site is identified with a globally unique ID (called oid) which is indexed in my catalog ; sometimes, I can also know that the object that I'm looking for is stored in a given path. So my question is simple : if I know the subpath in which the object is stored, is it faster to : - make a query only on the oid - make a query on the oid and path Thanks for any advise... Thierry -- Linux every day, keeps Dr Watson away... http://gpc.sourceforge.net -- http://www.ulthar.net