3836 search results - page 156 / 768 » Semantics of Database Transformations |
225
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PODS
2009
ACM
16 years 4 months ago
2009
ACM
We consider the problem of deciding query equivalence for a conjunctive language in which queries output complex objects composed from a mixture of nested, unordered collection ty...
127
Voted
RTSS
1993
IEEE
15 years 8 months ago
1993
IEEE
This paper presents a technique that is capable of supporting two major requirements for concurrency control in real-time databases: data temporal consistency, and data logical co...
247
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ICDE
2005
IEEE
16 years 5 months ago
2005
IEEE
Databases are at the core of successful businesses. Due to the voluminous stores of personal data being held by companies today, preserving privacy has become a crucial requiremen...
130
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ER
2005
Springer
15 years 9 months ago
2005
Springer
Generalization of spatial databases consists of complicated operations including not only geometric transformations but also topological changes. The changes often result in an inc...
123
Voted
ICIP
1998
IEEE
16 years 5 months ago
1998
IEEE
The rapid growth of visual data over the last few years has lead to many schemes for retrieving such data. With content-based systems today, there exists a significant gap between...