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VLDB
2000
ACM
14 years 2 months ago
2000
ACM
In this paper we study how to build an effective incremental crawler. The crawler selectively and incrementally updates its index and/or local collection of web pages, instead of ...
VLDB
2000
ACM
14 years 2 months ago
2000
ACM
Temporal databases assume a single line of time evolution. In other words, they support timeevolving data. However there are applications which require the support of temporal dat...
VLDB
2000
ACM
14 years 2 months ago
2000
ACM
Modern database applications show a growing demand for efficient and dynamic management of intervals, particularly for temporal and spatial data or for constraint handling. Common...
VLDB
2000
ACM
14 years 2 months ago
2000
ACM
A well-known challenge in data warehousing is the efficient incremental maintenance of warehouse data in the presence of source data updates. In this paper, we identify several cr...
VLDB
2000
ACM
14 years 2 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...