Incremental View Maintenance for Mobile Databases

In a mobile environment, querying a database at a stationary server from a mobile client is expensive due to the limited bandwidth of a wireless channel and the instability of the wireless network. We address this problem by maintaining a materialized view in a mobile client's local storage. Such a materialized view can be considered as a data warehouse. The materialized view contains results of common queries in which the mobile client is interested. In this paper, we address the view update problem for maintaining the consistency between a materialized view at a mobile client and the database server. The content of a materialized view could become incoherent with that at the database server when the content of the database server and/or when the location of the client is changed. Existing view update mechanisms are `push-based'. The server is responsible for notifying all clients whose views might be affected by the changes in database or the mobility of the client. This is...

• Type: Journal
• Year: 2000
• Where: KAIS
• Authors: Ken C. K. Lee, Hong Va Leong, Antonio Si
• Keywords: Database Server, KAIS 2000, Materialized View, Mobile Client