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zbMath0648.68112MaRDI QIDQ3793777

Joachim Biskup, Hans Hermann Brüggemann

Publication date: 1988

Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.

zbMATH Keywords

navigation predicate calculus formal semantics relational database relational algebra tableau unambiguity query optimization data manipulation language \(\gamma \)-acyclicity database system INGRES DURST nonnull condition universal relation view

Mathematics Subject Classification ID

Semantics in the theory of computing (68Q55) Information storage and retrieval of data (68P20)

Uses Software

INGRES

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