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2004 | OriginalPaper | Buchkapitel

Minimal Keys in Higher-Order Datamodels

verfasst von : Attila Sali

Erschienen in: Foundations of Information and Knowledge Systems

Verlag: Springer Berlin Heidelberg

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We study keys in higher-order datamodels. We show that they are equivalent with certain ideals. Based on that we introduce an ordering between key sets, and investigate systems of minimal keys. We give a sufficient condition for a Sperner-family of SHL-ideals being system of minimal keys, and give lower and upper bounds for the size of the smallest Armstrong-instance.

Metadaten
Titel
Minimal Keys in Higher-Order Datamodels
verfasst von
Attila Sali
Copyright-Jahr
2004
Verlag
Springer Berlin Heidelberg
DOI
https://doi.org/10.1007/978-3-540-24627-5_16