2674 search results - page 109 / 535 » Data Models and Query Languages for Spatial Databases |
84
Voted
SIGMOD
1990
ACM
15 years 6 months ago
1990
ACM
The role of database knowledge 1susually limited to the evaluation of data queries In this paper we argue that when this knowledge 1sof substantial volume and complexity, there 1s...
101
Voted
CORR
2002
Springer
15 years 2 months ago
2002
Springer
We describe a meta-querying system for databases containing queries in addition to ordinary data. In the context of such databases, a meta-query is a query about queries. Represen...
110
Voted
VLDB
2005
ACM
15 years 8 months ago
2005
ACM
We extend the OLAP data model to represent data ambiguity, specifically imprecision and uncertainty, and introduce an allocation-based approach to the semantics of aggregation qu...
131
Voted
WWW
2001
ACM
16 years 3 months ago
2001
ACM
A wealth of information is available on the Web. But often, such data are hidden behind form interfaces which allow only a restrictive set of queries over the underlying databases...
114
Voted
HPCC
2005
Springer
15 years 8 months ago
2005
Springer
Abstract. We consider query execution strategies for object-oriented distributed databases. There are several scenarios of query decomposition, assuming that the corresponding quer...