1500 search results - page 121 / 300 » Query Optimization in Database Grid |
IDEAS
2007
IEEE
14 years 3 months ago
2007
IEEE
In this paper we study the problem of deciding whether a regular path query over views in data-integration systems can be re-expressed without recursion. The problem becomes chall...
VLDB
1998
ACM
14 years 1 months ago
1998
ACM
: Structural queries constitute a special form of content-basedretrieval where the user specifiesa set of spatial constraints among query variables and asks for all configurations ...
SIGMOD
2006
ACM
14 years 9 months ago
2006
ACM
This paper presents a principled framework for efficient processing of ad-hoc top-k (ranking) aggregate queries, which provide the k groups with the highest aggregates as results....
VLDB
1999
ACM
14 years 1 months ago
1999
ACM
Database support for multidimensional arrays is an area of growing importance; a variety of highvolume applications such as spatio-temporal data management and statistics/OLAP bec...
IPPS
2005
IEEE
14 years 2 months ago
2005
IEEE
Continuous query systems are an intuitive way for users to access streaming data in large-scale scientific applications containing many hundreds of streams. A challenge in these ...