409 search results - page 50 / 82 » Plan Databases: Model and Algebra |
VLDB
2005
ACM
15 years 5 months ago
2005
ACM
We study XML stream-specific schema-based optimization. We assume a widely-adopted automata-based execution model for XQuery evaluation. Criteria are established regarding what s...
112
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ESORICS
2007
Springer
15 years 3 months ago
2007
Springer
As the XML model gets more popular, new needs arise to specify access control within XML model. Various XML access control models and enforcement methods have been proposed recentl...
EDBT
2006
ACM
15 years 12 months ago
2006
ACM
We study the expressiveness and performance of full-text search languages. Our main motivation is to provide a formal basis for comparing such languages and to develop a model for...
179
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SIGMOD
2009
ACM
16 years 5 hour ago
2009
ACM
The Dryad and DryadLINQ systems offer a new programming model for large scale data-parallel computing. They generalize previous execution environments such as SQL and MapReduce in...
107
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CLIMA
2010
15 years 1 months ago
2010
In this paper we present an agent language that combines agent functionality with an action theory and model-theoretic semantics. The language is based on abductive logic programmi...