Research on Technology About Invalidation Reports in Mobile Database Based on Multi-time Windows

How to keep cache consistency in mobile client is the key technique in mobile database.And using broadcasting of invalidation reports is a useful method to ensure that cached data in mobile clients are consistent with those stored in the server.But it's difficult to choose the window of invalidation reports because parameters are varying with environments and time.According to the interval of data update in mobile database,a method about invalidation reports based on multi time window is proposed.