654 search results - page 32 / 131 » Complexity of Answering Queries Using Materialized Views |
EDBT
2002
ACM
14 years 8 months ago
2002
ACM
Abstract. Estimating the sizes of query results, and intermediate results, is crucial to many aspects of query processing. In particular, it is necessary for effective query optimi...
DLOG
2008
13 years 10 months ago
2008
Answering queries posed over knowledge bases is a central problem in knowledge representation and database theory. In databases, query containment is one of the important query op...
ICDT
2005
ACM
14 years 2 months ago
2005
ACM
d abstract) Foto Afrati1 and Rada Chirkova2 1 Electrical and Computing Eng., National Technical University of Athens, 157 73 Athens, Greece 2 Computer Science Department, North Car...
SIGMOD
2002
ACM
14 years 8 months ago
2002
ACM
Recent years have witnessed an increasing interest in designing algorithms for querying and analyzing streaming data (i.e., data that is seen only once in a fixed order) with only...
CORR
2010
Springer
13 years 5 months ago
2010
Springer
Matching dependencies (MDs) are used to declaratively specify the identification (or matching) of certain attribute values in pairs of database tuples when some similarity conditi...