The USERSETS option initiates set walking for user-defined sets and integrated index sets.
During USERSETS processing, CA IDMS/DB Audit walks each set only one time if it does not detect any next, prior, or owner pointer errors. If a record is retrieved that does not own any set occurrences, it is bypassed.
In Figure 2.34, only records that are owners of sets initiate a set walk during the sweep of the DEPT-REGION area. Carol Smith and John Doe do not initiate a set walk by CA IDMS/DB Audit because they are not owners of any sets. When the owner record ENGLISH is retrieved, the DEPT-TEACHER set is walked (that is, ENGLISH, Carol Smith, John Doe, and finally ENGLISH again). In addition, the DEPT-ACADEMIC set is walked (that is, ENGLISH, American Literature, English Literature, Remedial English, and ENGLISH).
During QuickCheck auditing, USERSETS also looks for orphans. During Standard auditing, orphans are detected through WALKNEXT processing (discussed in detail later in Walknext Processing.)
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