Reply to Re: what are cursors in sql???

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Posted by --CELKO-- on 03/02/06 18:29

>> Interesting challenge. Can we "prove" that cursors are "REQUIRED" in a
relational model? <<

There is a proof that a finite automata with a push-down stack can
solve the same set of problems as primitive recursive functions, so
declarative and procedural languages can do the same things.

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