3 search results - page 1 / 1 » Incremental maintenance of aggregate and outerjoin expressio... |
IS
2006
13 years 11 months ago
2006
Views stored in a data warehouse need to be kept current. As recomputing the views is very expensive, incremental maintenance algorithms are required. Over recent years, several i...
PODS
2010
ACM
14 years 4 months ago
2010
ACM
This paper approaches the incremental view maintenance problem from an algebraic perspective. We construct a ring of databases and use it as the foundation of the design of a quer...
SIGMOD
1995
ACM
14 years 2 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...