8763 search results - page 114 / 1753 » Querying Database Knowledge |
105
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ADBIS
2005
Springer
15 years 9 months ago
2005
Springer
Abstract. The need for a user-friendly query language becomes increas
135
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CAISE
2006
Springer
15 years 7 months ago
2006
Springer
Databases are continuously evolving environments, where design constructs are added, removed or updated quite often. Research has extensively dealt with the problem of database evo...
149
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ICDT
2007
ACM
15 years 10 months ago
2007
ACM
Abstract. We study containment of conjunctive queries that are evaluated over databases that may contain tuples with null values. We assume the semantics of SQL for single block qu...
129
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PODS
2001
ACM
16 years 3 months ago
2001
ACM
The need to search for complex and recurring patterns in database sequences is shared by many applications. In this paper, we discuss how to express and support efficiently sophis...
131
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WIDM
2003
ACM
15 years 9 months ago
2003
ACM
A growing number of databases especially those published on the Web are becoming available to external users. Users of these databases are provided simple form-based query interfa...