Method, computer program product, and system for modifying populated databases utilizing a reload utility

摘要

A content reactive reload utility receives one or more content reactive user directives that may influence processing depending upon the content of a populated target database. Records are then read from an unload file and the IMS segments contained therein are written to the target database. If an IMS segment receives a duplicate error in attempting to perform the write operation because the segment already exists in the target database, then processing continues in accordance with the previously received user directives. The content reactive user directive may indicate that processing should be terminated, that processing should continue with the next segment from the unload file or that the duplicate segment should replace the like segment in the target database. In this manner, an unload file can be applied to a populated IMS database to achieve many common database management tasks with enhanced programmer productivity and improved processing efficiency.