Caching management of mobile DBMS

Unlike a traditional client-server network, a mobile computing environment has a very limited bandwidth in a wireless link. Thus, one design goal of c aching management in a mobile computing environment is to I educe the use o f wireless links. This is the primary objective for this research. Quota da ta and private data mechanisms are used in our design so that an MU user is able to query and update data from the local DBMS1 without cache coherence problems. The effect of the two mechanisms is to increase the hit ratio. A n agent on an MU along with a program on a base station are used to handle the caching management, including prefetching/hoarding, cache use, cache re placement, and cache-miss handling. The simulation results clearly indicate that our approaches are improvements to the previous research.