| 摘要 |
A method allowing a marketer to reconstruct prior searches or select a number customers in a targeted selection range which were not targeted by a previous query. A user may choose a range of ordered persistent record identifiers to ensure selection of mutually exclusive sets of records. To ensure that an adequate number of qualifying records are available for subsequent marketing campaign tasks related to the previously-targeted ranges of records, the previous ranges may be refined. Previously-targeted records within the earlier task's persistent record identifier ranges may be excluded while allowing selection of desired, qualifying records within the previously-targeted ranges. These previously-targeted ranges may be harvested for desired records using fewer system resources.
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