摘要 : In mobile client-server database systems, caching of frequently accessed data is an important technique that will reduce contention on the narrow bandwidth wireless channel. As the server in mobile environments may not have any in... 展开 In mobile client-server database systems, caching of frequently accessed data is an important technique that will reduce contention on the narrow bandwidth wireless channel. As the server in mobile environments may not have any information about the state of its clients' cache (stateless server),using broadcasting approach to transmit the updated data lists to numerous concurrent mobile clients is an attractive approach. 收起