136 search results - page 8 / 28 » Query optimizer for spatial join operations |
PVLDB
2010
14 years 9 months ago
2010
In XML search systems twig queries specify predicates on node values and on the structural relationships between nodes, and a key operation is to join individual query node matche...
173
click to vote
SIGMOD
2006
ACM
15 years 11 months ago
2006
ACM
Recent data stream systems such as TelegraphCQ have employed the well-known property of duality between data and queries. In these systems, query processing methods are classified...
109
Voted
DASFAA
2006
IEEE
15 years 5 months ago
2006
IEEE
Abstract. In emerging data stream applications, data sources are typically distributed. Evaluating multi-join queries over streams from different sources may incur large communica...
ICDE
2006
IEEE
15 years 5 months ago
2006
IEEE
XML structural joins, which evaluate the containment (ancestor-descendant) relationships between XML elements, are important operations of XML query processing. Estimating structu...
108
click to vote
VLDB
1989
ACM
15 years 3 months ago
1989
ACM
An Event-Join combinestemporaljoin and outerjoin properties into a single operation. It is mostly used to group temporal attributes of an entity into a single relation. In this pa...