RE: Tricky XPath Question

> But it leaves me curious whether standard query 
> algebra (eg. the relational algebra, used in RDBMS) had much influence on
the language.
> 
Using "=" on sets to imply an "exists" predicate is a long-standing
tradition in free text query languages. I've also seen it used in several
database query tools that I've come across. It makes things nice and simple
for users who don't want to think and extremely difficult for those who do.

Mike Kay


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