3891 search results - page 86 / 779 » Query Models |
123
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ADBIS
2004
Springer
15 years 7 months ago
2004
Springer
Abstract. Query reformulation techniques based on semantic knowledge have been used in two ways in database management systems, namely for query optimization and for data integrati...
191
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SIGMOD
2007
ACM
16 years 2 months ago
2007
ACM
There is a growing need to associate a variety of metadata with the underlying data, but a simple, elegant approach to uniformly model and query both the data and the metadata has...
101
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DBPL
2007
Springer
15 years 8 months ago
2007
Springer
Data streams are modeled as infinite or finite sequences of data elements coming from an arbitrary but fixed universe. The universe can have various built-in functions and predi...
134
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CIKM
2011
Springer
14 years 2 months ago
2011
Springer
Large knowledge bases consisting of entities and relationships between them have become vital sources of information for many applications. Most of these knowledge bases adopt the...
153
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CCGRID
2007
IEEE
15 years 8 months ago
2007
IEEE
Data Grids provide transparent access to heterogeneous and autonomous data resources. The main contribution of this paper is the presentation of a data sharing system that (i) is ...