1168 search results - page 171 / 234 » Optimization strategies for complex queries |
FCT
2009
Springer
15 years 4 months ago
2009
Springer
Suppose that we are given a set of n elements d of which are “defective”. A group test can check for any subset, called a pool, whether it contains a defective. It is well know...
PODS
2002
ACM
15 years 10 months ago
2002
ACM
We study two classes of view update problems in relational databases. We are given a source database S, a monotone query Q, and the view Q(S) generated by the query. The first pro...
DEXA
2000
Springer
15 years 2 months ago
2000
Springer
Abstract. Bitmap indices are popular multi-dimensional data structures for accessing read-mostly data such as data warehouse (DW) applications, decision support systems (DSS) and o...
PVLDB
2008
14 years 9 months ago
2008
Several real-world applications need to effectively manage and reason about large amounts of data that are inherently uncertain. For instance, pervasive computing applications mus...
SIGMOD
2005
ACM
15 years 10 months ago
2005
ACM
Advanced database systems face a great challenge raised by the emergence of massive, complex structural data in bioinformatics, chem-informatics, and many other applications. The ...