Sciweavers

3269 search results - page 393 / 654
» Query Optimization for XML
Sort
View
SIGIR
2012
ACM
13 years 8 months ago
Optimizing positional index structures for versioned document collections
Versioned document collections are collections that contain multiple versions of each document. Important examples are Web archives, Wikipedia and other wikis, or source code and ...
Jinru He, Torsten Suel
VLDB
1989
ACM
104views Database» more  VLDB 1989»
15 years 10 months ago
Gral: An Extensible Relational Database System for Geometric Applications
: We describe the architecture of a relational databasesystem that is extensible by user-defined data types and operations, including relation operations. The central concept is to...
Ralf Hartmut Güting
HT
2000
ACM
15 years 10 months ago
Ontology-supported and ontology-driven conceptual navigation on the World Wide Web
This paper presents the principles of ontology-supported and ontology-driven conceptual navigation. Conceptual navigation realizes the independence between resources and links to ...
Michel Crampes, Sylvie Ranwez
ICDE
2007
IEEE
126views Database» more  ICDE 2007»
16 years 7 months ago
QPIAD: Query Processing over Incomplete Autonomous Databases
Incompleteness due to missing attribute values (aka "null values") is very common in autonomous web databases, on which user accesses are usually supported through media...
Hemal Khatri, Jianchun Fan, Yi Chen, Subbarao Kamb...
SIGMOD
2007
ACM
124views Database» more  SIGMOD 2007»
16 years 6 months ago
Query suspend and resume
Suppose a long-running analytical query is executing on a database server and has been allocated a large amount of physical memory. A high-priority task comes in and we need to ru...
Badrish Chandramouli, Christopher N. Bond, Shivnat...