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» Querying Communities in Relational Databases
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SIGMOD
2002
ACM
169views Database» more  SIGMOD 2002»
16 years 6 months ago
Covering indexes for branching path queries
In this paper, we ask if the traditional relational query acceleration techniques of summary tables and covering indexes have analogs for branching path expression queries over tr...
Raghav Kaushik, Philip Bohannon, Jeffrey F. Naught...
SIGMOD
2003
ACM
115views Database» more  SIGMOD 2003»
16 years 6 months ago
Temporal Coalescing with Now, Granularity, and Incomplete Information
This paper presents a novel strategy for temporal coalescing. Temporal coalescing merges the temporal extents of value-equivalent tuples. A temporal extent is usually coalesced of...
Curtis E. Dyreson
ICDE
2007
IEEE
137views Database» more  ICDE 2007»
16 years 7 months ago
SAO: A Stream Index for Answering Linear Optimization Queries
Linear optimization queries retrieve the top-K tuples in a sliding window of a data stream that maximize/minimize the linearly weighted sums of certain attribute values. To effici...
Gang Luo, Kun-Lung Wu, Philip S. Yu
SIGMOD
1993
ACM
150views Database» more  SIGMOD 1993»
15 years 10 months ago
Predicate Migration: Optimizing Queries with Expensive Predicates
The traditional focus of relational query optimization schemes has been on the choice of join methods and join orders. Restrictions have typically been handled in query optimizers ...
Joseph M. Hellerstein, Michael Stonebraker
DASFAA
2004
IEEE
156views Database» more  DASFAA 2004»
15 years 10 months ago
Automatic Generation of SQLX View Definitions from ORA-SS Views
Abstract. Although XML is the dominant standard for publishing and exchanging data for Internet-based business applications, data is typically stored in relational or object-relati...
Ya Bing Chen, Tok Wang Ling, Mong-Li Lee