𝔖 Bobbio Scriptorium
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A Pictorial Query-By-Example Language

✍ Scribed by Dimitris Papadias; Timos Sellis


Book ID
112261232
Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
628 KB
Volume
6
Category
Article
ISSN
1045-926X

No coin nor oath required. For personal study only.


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We show that a form of divide and conquer recursion on sets, together with the relational algebra, expresses exactly the queries over ordered relational databases which are NC-computable. At a finer level, we relate k nested uses of recursion exactly to AC k , k 1. We also give corresponding results