Maintaining consistency of repository data sets
During initialization, XBM checks the repository data sets for consistency.
The first record in a repository data set is a timestamp record. When the repository data sets are opened, the timestamps are compared to ensure that all data sets are current. If one or more of the data sets need to be rebuilt, the data set with the most recent timestamp is used to rebuild the remaining data sets and update the timestamp record for the remaining data sets, as illustrated in the following figure:
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