A DATA EXCHANGE MIDDLEWARE’s REASEARCH and REALIZATION BASED ON GLOBAL TARGET VIEW's DECOMPOSITION and RECOMPOSITION ALGORITHM

Benefiting from the data warehouse online maintenance technology， user's demand on data share and exchange were expressed based on global target view. The global target view's decomposition and re-composition algorithm to decompose global target view into local target view were proposed, which merely related with single data source. Here data share and exchange are achieved by materializing those views.