641 search results - page 31 / 129 » Temporal Queries in OLAP |
157
Voted
TIME
2007
IEEE
15 years 10 months ago
2007
IEEE
Transaction-time temporal databases and query languages provide a solid framework for analyzing properties of queries over data streams. In this paper we focus on issues connected...
149
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PPSWR
2004
Springer
15 years 9 months ago
2004
Springer
Abstract. Time is omnipresent on the (Semantic) Web. However, formalism like XML, XML Schema, RDF, OWL and (Semantic) Web query languages have, if any, only very limited notions of...
142
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VLDB
2000
ACM
15 years 7 months ago
2000
ACM
Approximate query answering systems provide very fast alternatives to OLAP systems when applications are tolerant to small errors in query answers. Current sampling-based approach...
130
Voted
EDBT
2008
ACM
16 years 4 months ago
2008
ACM
Enterprises may have multiple database systems spread across the organization for redundancy or for serving different applications. In such systems, query workloads can be distrib...
134
Voted
SIGMOD
1997
ACM
15 years 8 months ago
1997
ACM
: The read-mostly environment of data warehousing makes it possible to use more complex indexes to speed up queries than in situations where concurrent updatesare present. The curr...