Relational operator

Known as: Does not equal, ==, .GE. 
In computer science, a relational operator is a programming language construct or operator that tests or defines some kind of relation between two… (More)
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Highly Cited
2007
Highly Cited
2007
Map-Reduce is a programming model that enables easy development of scalable parallel applications to process a vast amount of… (More)
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Highly Cited
2005
Highly Cited
2005
Relational DBMS typically execute concurrent queries independently by invoking a set of operator instances for each query. To… (More)
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Highly Cited
2005
Highly Cited
2005
The SPARQL query language for RDF provides Semantic Web developers with a powerful tool to extract information from large… (More)
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Highly Cited
1992
Highly Cited
1992
For the conventional relational model there has been considerable research in the area of incomplete information. On the other… (More)
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Highly Cited
1987
Highly Cited
1987
A multilevel relational data model that meets the basic operational requirements for a multilevel database system is described… (More)
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Highly Cited
1986
Highly Cited
1986
Motivated by new applications of database systems we introduce relations which may have relation-valued attributes and propose a… (More)
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Highly Cited
1986
Highly Cited
1986
Sampling is a fundamental operation for the auditing and statistical analysis of large databases. It is not well supported in… (More)
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Highly Cited
1984
Highly Cited
1984
This paper concerns the semantics of Codd's relational model of data. Formulated are precise conditions that should be satisfied… (More)
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Highly Cited
1979
Highly Cited
1979
We discuss the relationship between normal forms in a relational database and an allowed set of relational operators. We define… (More)
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Highly Cited
1979
Highly Cited
1979
Many database queries can be formulated in terms of expressions whose operands represent tables of information (relations) and… (More)
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