[XQZone General] efficiency question

[Charles Blair]

i'd like to know which is more efficient: querying a document with
100,000 elements for an element containing a string, or querying
100,000 documents for an element containing a string. is it a wash? i
tried the former, and it's reasonably fast. i'd rather not experiment
with the latter unless i have reason to believe it might be at least
as fast (though for what i'm prototyping, it might make for a better
implementation). thanks.