4616 search results - page 595 / 924 » Beyond relational databases |
197
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ICDT
1997
ACM
15 years 11 months ago
1997
ACM
Abstract. The goal of this paper is to study tractable iteration mechanisms for bags. The presence of duplicates in bags prevents iteration mechanisms developed in the context of s...
156
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SIGMOD
1996
ACM
15 years 11 months ago
1996
ACM
Detecting and representing changes to data is important for active databases, data warehousing, view maintenance, and version and configuration management. Most previous work in c...
182
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SIGMOD
1996
ACM
15 years 11 months ago
1996
ACM
Object-Relational and Object-Oriented DBMSs allow users to invoke time-consuming ("expensive") methods in their queries. When queries containing these expensive methods a...
164
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SIGMOD
1996
ACM
15 years 11 months ago
1996
ACM
Many commercial database systems maintain histograms to summarize the contents of relations and permit efficient estimation of query result sizes and access plan costs. Although s...
246
Voted
HPTS
1993
15 years 10 months ago
1993
Elements of transaction processing become more and more accepted as a base for general purpose distributed computing.We have developed an action concept with an extended functiona...