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...
Abstract. In this PhD project, we deal with the issue of code duplication in logic programs. In particular semantical duplication or redundancy is generally viewed as a possible se...
The development of techniques for supporting incremental maintenance of materialized views has been an active research area for over twenty years. However, although there has been ...
M. Akhtar Ali, Norman W. Paton, Alvaro A. A. Ferna...
Materialized views are nowadays commonly used in the data warehouse environment. Materialized views need to be updated when data sources change. Since the update of the views may ...
In many information systems, the databases that make up the system are distributed in different modules or branch offices according to the requirements of the business enterprise. ...