793 search results - page 121 / 159 » Validity-Sensitive Querying of XML Databases |
SIGMOD
2002
ACM
14 years 7 months ago
2002
ACM
Relational query optimizers have traditionally relied upon table cardinalities when estimating the cost of the query plans they consider. While this approach has been and continue...
VLDB
2004
ACM
14 years 1 months ago
2004
ACM
When a client submits a set of XPath queries to a XML database on a network, the set of answer sets sent back by the database may include redundancy in two ways: some elements may...
VLDB
2004
ACM
14 years 1 months ago
2004
ACM
The widespread adoption of XML holds out the promise that document structure can be exploited to specify precise database queries. However, the user may have only a limited knowle...
ICDE
2002
IEEE
14 years 9 months ago
2002
IEEE
XML and other semi-structured data may have partially specified or missing schema information, motivating the use of a structural summary which can be automatically computed from ...
ICPPW
2006
IEEE
14 years 1 months ago
2006
IEEE
The ability to manage metadata is a critical requirement of the grid, but scientists have not been given the tools needed to catalog experimental data based complex metadata attri...