SIGMOD
1995
ACM
14 years 3 months ago
1995
ACM
We study the problem of e cient maintenance of materialized views that may contain duplicates. This problem is particularly important when queries against such views involve aggre...
CIS
2004
Springer
14 years 3 months ago
2004
Springer
rces. A data warehouse can be abstractly seen as a set of materialized views. Selecting views for materialization in a data warehouse is one of the most important decisions making ...
DBPL
1997
Springer
14 years 3 months ago
1997
Springer
Previous research on materialized views has primarily been in the context of flat relational databases--materialized views defined in terms of one or more flat relations. This pape...
VLDB
1999
ACM
14 years 3 months ago
1999
ACM
We present an optimization method and algorithm designed for three objectives: physical data independence, semantic optimization, and generalized tableau minimization. The method ...
DEXAW
1998
IEEE
14 years 3 months ago
1998
IEEE
Within a database mobile environment, cached data on mobile clients can take the form of materialized views. In order to e ciently maintain such materialized views while taking in...
DEXAW
1998
IEEE
14 years 3 months ago
1998
IEEE
Materialized views offer opportunities for significant performance gain in query evaluation by providing fast access to pre-computed data. The question of when and how to use a ma...
ER
1999
Springer
14 years 3 months ago
1999
Springer
A Data Warehouse DW can be abstractly seen as a set of materialized views de ned over a set of remote data sources. A DW is intended to satisfy a set of queries. The views materi...
DAWAK
1999
Springer
14 years 3 months ago
1999
Springer
A data warehouse DW can be seen as a set of materialized views de ned over remote base relations. When a query is posed, it is evaluated locally, using the materialized views, wi...
DOLAP
1999
ACM
14 years 3 months ago
1999
ACM
In this paper, we describe the design of a data warehousing system for an engineering company ‘R’. This system aims to assist users in retrieving data for business analysis in...
SIGMOD
2000
ACM
14 years 3 months ago
2000
ACM
We investigate the problem of using materialized views to answer SQL queries. We focus on modern decision-support queries, which involve joins, arithmetic operations and other (po...