Abstract

In this paper, we have developed an approach to specify when updating materialized webviews. A webview is a web page that is automatically constructed from a structured database. We have introduced a new update policy called “early ondemand” update which is based on the user preferences. Then we have combines this policy with the on-demand one to update the materialized webviews. Our experiments showed that the proposed hybrid approach guarantees strong consistency of data and allows reducing latency of updating webviews. In addition, they prove that our solution decreases the server overload (access+ update cost) significantly better that the on-demand and the immediate policies.

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