The invention relates to a sale data association management method and system. The sale data association management method includes steps as following: firstly, building several enterprise data, thereinto every enterprise data possesses a main key column, secondly, some enterprise data is selected as the target data, at least one enterprise data is selected as the other relative data which is associated with the target data, then a association relation data is built according to the main key column of the target data and relative data, at last, the relative data which is associated with the target data based on the main key column recorded in the association relation data. The sale data association management system includes a data building mould, an interface mould, an association building mould, a database and a searching mould. The invention realizing the dynamic increasing or adjusting enterprise data relation by quickly adding or updating the association relation data to achieve the expect effect, it suits for application.

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