Changchun National High-technology Industries Development Area (in short is CHIDA) was established in March 1991, which is one of the first 27 high-tech areas approved by state councils. The total area of CHIDA is 80.53 square Km and it naturally extends to the southwest part of Changchun urban.Due to late 2007, the enterprises registered in
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Data mart as an emerging data management technology, has many advantages compared with the data warehouse, and it is widely used in various application systems. China Mobile Group Jilin Co., Ltd.’s research and development of data marts of the objectives is to meet the cities of branches personalized and localized marketing services and management of
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