ODS Data Update Strategy Based on WAN and Heterogeneous Environment
Yu Ge · Jisuanji gongcheng · 2006
To satisfy the multi-level requirements of information process and supply the up to the second and exact global data view for decision-maker and analyzer in enterprise,the three-leveled architecture DB-ODS-DW in which ODS takes a connecting link functions between the preceding and the following is come forth.The data update strategy,an essential technique of ODS is studied in this paper.Contrasting with the traditional ODS data update strategies,a new strategy based on WAN and heterogeneous environment is proposed,in which the XML is used to implement the delta data updating in heterogeneous databases and to transmit the delta data file efficiently.This kind of strategy has been applied in practice and perfect effect has been obtained.