687 search results - page 29 / 138 » Query Transformation for PSJ-Queries |
DATESO
2004
13 years 10 months ago
2004
The XML language have been becoming de-facto a standard for representation of heterogeneous data in the Internet. From database point of view, XML is a new approach to data modelli...
VLDB
2002
ACM
13 years 8 months ago
2002
ACM
Star queries are the most prevalent kind of queries in data warehousing, OLAP and business intelligence applications. Thus, there is an imperative need for efficiently processing ...
ICLP
1999
Springer
14 years 27 days ago
1999
Springer
We introduce the notion of bounded nondeterminism for logic programs and queries. A program and a query have bounded nondeterminism if there are finitely many refutations for the...
VLDB
2004
ACM
14 years 2 months ago
2004
ACM
PIVOT and UNPIVOT, two operators on tabular data that exchange rows and columns, enable data transformations useful in data modeling, data analysis, and data presentation. They ca...
PVLDB
2008
13 years 8 months ago
2008
XTCcmp, the XQuery Compiler of a native XML database system, extends Starburst's well-known Query Graph Model to serve as an internal representation and basis for query restr...