995 search results - page 18 / 199 » Optimization of Complex Nested Queries in Relational Databas... |
VLDB
1992
ACM
13 years 11 months ago
1992
ACM
Research in temporal databases has mainly focused on defining temporal data models by extending existing models, and developing access structures for temporal data. Little has bee...
BNCOD
2007
13 years 9 months ago
2007
Order is essential for XML query processing. Efficient XML processing with order consideration over relational storage is non-trivial, especially for complex nested XQuery expressi...
ICDE
2003
IEEE
14 years 8 months ago
2003
IEEE
In order to publish a nested XML document from flat relational data, multiple SQL queries are often needed. The efficiency of publishing relies on how fast these queries can be ev...
GIS
2005
ACM
14 years 8 months ago
2005
ACM
Group nearest neighbor (GNN) queries are a relatively new type of operations in spatial database applications. Different from a traditional kNN query which specifies a single quer...
ICDT
2010
ACM
14 years 4 months ago
2010
ACM
We study fundamental aspects related to the efficient processing of the SPARQL query language for RDF, proposed by the W3C to encode machine-readable information in the Semantic W...