3836 search results - page 187 / 768 » Semantics of Database Transformations |
104
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SIGMOD
2004
ACM
16 years 4 months ago
2004
ACM
In Toronto's Kanata project, we are investigating the integration and exchange of data and metadata in dynamic, autonomous environments. Our focus is on the development and m...
160
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BMCBI
2008
15 years 4 months ago
2008
Currently, most of the discovered biological and biomedical knowledge is available as textual data in scientific papers. And, locating and curating information about a genomic enti...
265
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ICDE
1997
IEEE
16 years 5 months ago
1997
IEEE
2. ODB-QOPTIMIZER : the tool ODB-QOPTIMIZERis a ODMG 93 compliant tool for the schema validation and semantic query optimization. The approach is based on two fundamental ingredien...
145
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CDB
2004
Springer
15 years 9 months ago
2004
Springer
Preference queries are relational algebra or SQL queries that contain occurrences of the winnow operator (find the most preferred tuples in a given relation). We present here a nu...
167
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IDEAS
1999
IEEE
15 years 8 months ago
1999
IEEE
The diversity of spatial information systems promotes the need to integrate heterogeneous spatial or geographic information systems (GIS) in a cooperative environment. This paper ...