622 search results - page 68 / 125 » Query Languages and Data Models for Database Sequences and D... |
NAR
2006
13 years 8 months ago
2006
The University of California Santa Cruz Genome Browser Database (GBD) contains sequence and annotation data for the genomes of about a dozen vertebrate species and several major m...
PODS
2009
ACM
14 years 9 months ago
2009
ACM
In this work we investigate the satisfiability problem for the logic XPath( , , =), that includes all downward axes as well as equality and inequality tests. We address this probl...
SIGMOD
2008
ACM
14 years 8 months ago
2008
ACM
To deal with data uncertainty, existing probabilistic database systems augment tuples with attribute-level or tuple-level probability values, which are loaded into the database al...
IDEAS
2007
IEEE
14 years 3 months ago
2007
IEEE
The problem of data integration (query decomposition, data fragmentation) has been widely studied in literature, but the inherent hierarchical nature of XML data presents problems...
WWW
2006
ACM
14 years 9 months ago
2006
ACM
Path expressions are the principal means of locating data in a hierarchical model. But path expressions are brittle because they often depend on the structure of data and break if...