| 摘要 |
A geographic information system (GIS) includes a created link between GIS objects in the database of the geographic information system (GIS), and performed GIS operations. The linked GIS object and performed GIS operation provides a mechanism to more easily identify the impact of making an update to a GIS database. A database association is maintained between GIS object identifiers and the requesting GIS operation to enable a reverse trace back from the nature of the GIS operation to the GIS object involved.
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