Sciweavers

1500 search results - page 23 / 300
» Query Optimization in Database Grid
Sort
View
VLDB
2005
ACM
139views Database» more  VLDB 2005»
14 years 2 months ago
Analyzing Plan Diagrams of Database Query Optimizers
A “plan diagram” is a pictorial enumeration of the execution plan choices of a database query optimizer over the relational selectivity space. In this paper, we present and an...
Naveen Reddy, Jayant R. Haritsa
ADC
2006
Springer
142views Database» more  ADC 2006»
14 years 2 months ago
An optimization for query answering on ALC database
Query answering over OWLs and RDFs on the Semantic Web is, in general, a deductive process. To this end, OWL, a family of web ontology languages based on description logic, has be...
Pakornpong Pothipruk, Guido Governatori
SIGMOD
2001
ACM
124views Database» more  SIGMOD 2001»
14 years 9 months ago
Query Optimization In Compressed Database Systems
Over the last decades, improvements in CPU speed have outpaced improvements in main memory and disk access rates by orders of magnitude, enabling the use of data compression techn...
Zhiyuan Chen, Johannes Gehrke, Flip Korn
ICDE
2011
IEEE
273views Database» more  ICDE 2011»
13 years 15 days ago
Shortcut selection in RDF databases
—An increasing amount of data produced nowadays is in RDF format. While significant work has been performed on view selection and query optimization algorithms in relational dat...
Vicky Dritsou, Panos Constantopoulos, Antonios Del...
DEXA
2000
Springer
98views Database» more  DEXA 2000»
14 years 1 months ago
Optimal Page Ordering for Region Queries in Static Spatial Databases
Page ordering is to define the order of pages in one-dimensional storage for storing two-dimensional spatial data to reduce the number of disk seeks. Previous works relating to pag...
Daesoo Cho, Bonghee Hong