281 search results - page 31 / 57 » Querying the Guarded Fragment |
172
Voted
ICDE
2005
IEEE
15 years 11 months ago
2005
IEEE
Vertical partitioning is a well-known technique for optimizing query performance in relational databases. An extreme form of this technique, which we call vectorization, is to sto...
162
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VLDB
2005
ACM
15 years 10 months ago
2005
ACM
Efficient querying of XML streams will be one of the fundamental features of next-generation information systems. In this paper we propose the TurboXPath path processor, which acce...
PODS
2003
ACM
15 years 10 months ago
2003
ACM
A query against a database behind a site like Napster may search, e.g., for all users who have downloaded more jazz titles than pop music titles. In order to express such queries,...
103
Voted
ICDE
2010
IEEE
15 years 10 months ago
2010
IEEE
Many web databases can be seen as providing partial and overlapping information about entities in the world. To answer queries effectively, we need to integrate the information abo...
93
Voted
PODS
2008
ACM
15 years 10 months ago
2008
ACM
We present a formal framework for capturing the provenance of data appearing in XQuery views of XML. Building on previous work on relations and their (positive) query languages, w...