| 摘要 |
A method, program and system for comparing and analyzing a first set of data with a second set of data received by a computer while maintaining a persistent key is disclosed. The method, program and system comprising the step of receiving a first data set and a second data set, each data set comprising at least one record, where each record reflects at least one of a plurality of entities. In this regard, more than one record may reflect the same entity (e.g., an entity representing a specific person). The method, program and system further comprises the step of utilizing an algorithm to: (a) compare the second data set to at least a portion of the first data set; (b) identify or assign a persistent key (and perhaps the same persistent key for records reflecting the same entity) for each record in the second data set; and (c) create a database or file (i.e., a journal) to include any records: (i) in the second data set that: (1) do not exist in the first data set (perhaps with an "add" directive representing additions and the identified or assigned persistent key), (2) include at least one change to at least one record in the first data set (perhaps with a "modify" directive representing modifications and the identified or assigned persistent key), and/or (3) perhaps do not include at least one change to at least one record in the first data set, but reflects the identical one of a plurality of entities as a record in the first data set with a date (perhaps with a "no change" directive representing that the same record in the first data set was submitted in the second data set); and/or (ii) in the first data set that do not exist in the second data set, perhaps: (1) with a "delete" directive representing deletions and the identified persistent key and (2) only if the second data set is not incremental (e.g., only last month's changes, rather than a complete data set) of the at least a portion of the first data set. |
