159 search results - page 15 / 32 » Performing grouping and aggregate functions in XML queries |
CIKM
2006
Springer
13 years 11 months ago
2006
Springer
By providing an integrated and optimized support for user-defined aggregates (UDAs), data stream management systems (DSMS) can achieve superior power and generality while preservi...
CORR
2010
Springer
13 years 7 months ago
2010
Springer
In this short paper we present the state of advancement of the French ANR WebStand project. The objective of this project is to construct a customizable XML based warehouse platfo...
WWW
2006
ACM
14 years 8 months ago
2006
ACM
We introduce a new, powerful class of text proximity queries: find an instance of a given "answer type" (person, place, distance) near "selector" tokens matchi...
IDEAS
2000
IEEE
13 years 11 months ago
2000
IEEE
Most operations of the relational algebra or SQL - like projection with duplicate elimination, join, ordering, group by and aggregations - are efficiently processed using a sorted...
SIGMOD
2002
ACM
14 years 7 months ago
2002
ACM
In this paper, we ask if the traditional relational query acceleration techniques of summary tables and covering indexes have analogs for branching path expression queries over tr...