C. J. Date
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Extending the relational algebra to capture less meaning
Automatic normalistation and entity: relationship generation through attributes and roles
Lessons from a “living in a database” graphical query interface
Accurate estimation of the number of tuples satisfying a condition
A multikey hashing scheme using predicate trees
An implementation of GEM: supporting a semantic data model on a relational back-end.
Designing DBMS support for the temporal dimension
V Lum, P Dadam, R Erbe, J Guenauer, P Pistor, G Walch, H Werner, J Woodfill
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An optimizing prolog front-end to a relational query system
Matthias Jarke, Jim Clifford, Yannis Vassiliou
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