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zbMath0651.68119MaRDI QIDQ3796815

Bernhard Thalheim

Publication date: 1988

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

zbMATH Keywords

relational database forbidden null values in primary keys

Mathematics Subject Classification ID

Data structures (68P05) Information storage and retrieval of data (68P20)

Related Items (2)

The number of keys in relational and nested relational databases ⋮ A Generalisation of Entity and Referential Integrity in Relational Databases

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