Nested relations and complex objects in databases

zbMath0712.68004MaRDI QIDQ749194

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Publication date: 1989

Published in: Lecture Notes in Computer Science (Search for Journal in Brave)

zbMATH Keywords

Workshoprecursive queriesDatabasesSelected paperscomplex objectsComplex objectsDarmstadt (FRG)languages for complex objectsnested relationsNested relationsnested sequences of tuples

Mathematics Subject Classification ID

Database theory (68P15) Proceedings, conferences, collections, etc. pertaining to computer science (68-06)

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CGOOD, a categorical graph-oriented object data model ⋮ Complex object multi-level fixpoint queries. ⋮ The expressive power of cardinality-bounded set values in object-based data models ⋮ Query languages for hierarchic databases ⋮ Simulation of the nested relational algebra by the flat relational algebra, with an application to the complexity of evaluating powerset algebra expressions ⋮ Equivalence and normal forms for the restricted and bounded fixpoint in the nested algebra