7607 search results - page 61 / 1522 » Querying data provenance |
VLDB
2004
ACM
14 years 3 months ago
2004
ACM
Query containment is the most fundamental relationship between a pair of database queries: a query Q is said to be contained in a query Q if the answer for Q is always a subset of...
GIS
2008
ACM
14 years 10 months ago
2008
ACM
Multi-dimensional spatial data are obtained when a number of data acquisition devices are deployed at different locations to measure a certain set of attributes of the study subje...
DASFAA
1999
IEEE
14 years 2 months ago
1999
IEEE
In this paper we describe the design and implementation of a CORBA Query Service targeted to access data that is defined by the EXPRESS data modeling language. EXPRESS is used pri...
VLDB
1997
ACM
14 years 1 months ago
1997
ACM
In semistructured databases there is no schema fixed in advance. To provide the benefits of a schema in such environments, we introduce DataGuides: concise and accurate structural...
CCCG
2008
13 years 11 months ago
2008
We present data structures for triangular emptiness and reporting queries for a planar point set, where the query triangle contains the origin. The data structures use near-linear...