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Volume 4 / Issue 5

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DOI:   10.3217/jucs-004-05-0547


On the Number of Keys of a Relational Database Schema

Ralf Wastl (University of Würzburg, Germany)

Abstract: We introduce an inference system for deriving all keys of a relation schema. Then we show that the number of keys of a relation schema R = is bounded by .

Keywords: inference system, keys, relation schema

Categories: H.2.1, H.2.8