Keeping virtual information resources up and running

The maintenanceofmaterializedviews in largescale environments composed of numerous heterogeneous information sources ISs, such as the WWW, has importance for the new breed of information service providers. These applications face the problem that such large-scale environments are plagued with ISs not only continuously modifyingtheir contents, but also their schemas and query capabilities. Current view technology assumes a static environment, in the sense that once the underlying environmentuponwhich the view isde ned changes its capabilities, views become unde ned. This paper is the rst attempt of addressing this problem, which we coin view synchronization. Our EVE Evolvable View Environment solution is capable of maintaining virtual repositories views under capabilitieschanges ofthe underlying sources in situations where current view technology would fail. In this paper, we introduce the key concepts of the EVE solution, in particular, the EVE architecture, a new exible view sp...

• Type: Conference
• Year: 1997
• Where: CASCON
• Authors: Amy J. Lee, Anisoara Nica, Elke A. Rundensteiner
• Keywords: CASCON 1997, CASCON 2007, Current View Technology, Eve Evolvable View, View Speci Cation