The native sequence backup uses the Native Key defined to each table in a data area to reorganize the data area in Native Key sequence. You cannot use the native sequence for a backup if the Native Key is also defined as the direct access key.
A native sequence backup of a data area is not allowed if the database is open for update by any other task. Once a Native Sequence backup begins, CA Datacom/DB does not allow an open for update.
With a Native Key sequence, the FIRSTKEY= and LASTKEY= optional keywords can be used to selectively include or exclude data from BACKUP output file. This can be used for building test data, purging old data, or selecting segments of CA Datacom tables for offline processing.
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