1300 search results - page 107 / 260 » XML Query Processing and Optimization |
VLDB
1991
ACM
14 years 15 days ago
1991
ACM
In order to cope efficiently with simple or complex queries as well as different application requirements (e.g., ad-hoc versus repetitive queries), a query optimizer ought to supp...
BNCOD
2003
13 years 10 months ago
2003
In this paper we describe a query paradigm based on ontologies, aggregate table-driven querying and expansion of QBE. It has two novel features: visually specifying aggregate table...
ICDE
2008
IEEE
14 years 10 months ago
2008
IEEE
Text documents often embed data that is structured in nature, and we can expose this structured data using information extraction technology. By processing a text database with inf...
MFCS
2009
Springer
14 years 3 months ago
2009
Springer
We study visibly pushdown automata (VPA) models for expressing and evaluating queries, expressed using MSO formulas, on words with a nesting structure (like XML documents). We de�...
PODS
2005
ACM
14 years 9 months ago
2005
ACM
In sensor networks, data acquisition frequently takes place at lowcapability devices. The acquired data is then transmitted through a hierarchy of nodes having progressively incre...