796 search results - page 46 / 160 » A Formalization of ODMG Queries |
ER
2004
Springer
15 years 5 months ago
2004
Springer
This paper uses a knowledge-based approach to querying heterogeneous spatial databases based on an ontology and conceptual and attribute similarities. The ontology, which may be in...
ADC
1995
Springer
15 years 3 months ago
1995
Springer
Even if high-level query languages are used, query formulation may cause problems. This is notably so in case of large and complex application domains. Typical examples of these k...
FUIN
2002
14 years 11 months ago
2002
Abstract. In the paper we deal with the problem of modeling and querying information in schemaless databases of partially labeled objects (PLO-DB). Partially labeled objects are us...
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ESORICS
2002
Springer
15 years 11 months ago
2002
Springer
Abstract. An important goal of security in information systems is confidentiality. A confidentiality policy specifies which users should be forbidden to acquire what kind of inform...
DBPL
2003
Springer
15 years 5 months ago
2003
Springer
We introduce the new notion of XML Stream Attribute Grammars (XSAGs). XSAGs are the first scalable query language for XML streams (running strictly in linear time with bounded mem...