1204 search results - page 188 / 241 » Database research in computer games |
PODS
2004
ACM
14 years 10 months ago
2004
ACM
A schema mapping is a specification that describes how data structured under one schema (the source schema) is to be transformed into data structured under a different schema (the...
PODS
2007
ACM
14 years 10 months ago
2007
ACM
The generalized hypertree width GHW(H) of a hypergraph H is a measure of its cyclicity. Classes of conjunctive queries or constraint satisfaction problems whose associated hypergr...
DEXA
2009
Springer
14 years 4 months ago
2009
Springer
Describing relational data sources (i.e. databases) by means of ontologies constitutes the foundation of most of the semantic based approaches to data access and integration. In sp...
PODS
2010
ACM
14 years 3 months ago
2010
ACM
We give the first optimal algorithm for estimating the number of distinct elements in a data stream, closing a long line of theoretical research on this problem begun by Flajolet...
VLDB
2001
ACM
14 years 2 months ago
2001
ACM
The proliferation of mobile and pervasive computing devices has brought energy constraints into the limelight, together with performance considerations. Energy-conscious design is...