2728 search results - page 170 / 546 » The EGTV Query Language |
163
Voted
PODS
1999
ACM
15 years 9 months ago
1999
ACM
We investigate the problem of how to extend constraint query languages with aggregate operators. We deal with standard relational aggregation, and also with aggregates speci c to ...
145
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SEMWEB
2005
Springer
15 years 10 months ago
2005
Springer
We propose a declarative update language for RDF graphs which is based on the paradigms of query and view languages RQL and RVL. Our language, called RUL, ensures that the executio...
150
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DEDUCTIVE
1994
15 years 6 months ago
1994
Non-deterministic operators are needed in First-Order relational languages and Datalog to extend the expressive power of such languages and support efficient formulations of lowco...
173
Voted
ICDT
1997
ACM
15 years 9 months ago
1997
ACM
Abstract. The goal of this paper is to study tractable iteration mechanisms for bags. The presence of duplicates in bags prevents iteration mechanisms developed in the context of s...
164
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ICGI
2000
Springer
15 years 8 months ago
2000
Springer
A subpansive tree is a rooted tree that gives a partial order of nonterminal symbols of a context-free grammar. We formalize subpansive trees as background knowledge of CFGs, and i...