1533 search results - page 20 / 307 » Ordering the attributes of query results |
VLDB
1999
ACM
13 years 11 months ago
1999
ACM
In many applications, users specify target values for certain attributes, without requiring exact matches to these values in return. Instead, the result to such queries is typical...
SIGMOD
2010
ACM
14 years 9 days ago
2010
ACM
Online aggregation is a promising solution to achieving fast early responses for interactive ad-hoc queries that compute aggregates on a large amount of data. Essential to the suc...
SIGMOD
1994
ACM
13 years 11 months ago
1994
ACM
In this paper, we propose a novel approach for estimating the record selectivities of database queries. The real attribute value distribution is adaptively approximated by a curve...
VLDB
2003
ACM
14 years 7 months ago
2003
ACM
The efficient retrieval of data items on set-valued attributes is an important research topic that has attracted little attention so far. We studied and modified four index structu...
DEXA
2007
Springer
14 years 1 months ago
2007
Springer
We present an access method for set-valued attributes that is based on a multi-level extendible hashing scheme. This scheme avoids exponential directory growth for skewed data and...