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At 02:30 PM 7/3/2002 -0700, Joe English wrote:
>I'd even question how relevant the efficiency issue is.
>
>XQuery is designed, principally, to do database queries.
>In this context, it doesn't matter if you can take advantage
>of type information to add two xs:integers in nanoseconds
>instead of microseconds, when it takes milliseconds to retrieve
>the data in the first place.
Queries on large sets of data *do* need to be efficient - and when you want
to be efficient, you try to avoid actually retrieving the data whenever
possible. Reasoning about types statically is one of the ways we do this.
Jonathan
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