2514 search results - page 71 / 503 » On the Computation of Approximations of Database Queries |
146
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ICDT
1997
ACM
15 years 10 months ago
1997
ACM
The paper introduces a model of the Web as an in nite, semistructured set of objects. We reconsider the classical notions of genericity and computability of queries in this new con...
154
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DEXAW
2006
IEEE
16 years 12 days ago
2006
IEEE
This paper briefly reviews the recent literature on consistent query answering, an approach to handle database inconsistency in a systematic and logical manner based on the notio...
133
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ADC
1995
Springer
15 years 10 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...
161
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TIME
2000
IEEE
15 years 10 months ago
2000
IEEE
We present a data model for movies and movie databases. A movie is considered to be a 2-dimensional semialgebraic figure that can change in time. We give a number of computabilit...
171
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IIE
2007
15 years 6 months ago
2007
In recent years a small number of web-based tools have been proposed to help students learn to write SQL query statements and also to assess students’ SQL writing skills. SQLify ...