Appendix: Maintenance of union catalog

With model 1: master record with holding libraries listed

1. Record is uploaded from master record library

Results in: master record being replaced

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2. Record is uploaded from non-master record library -- uploaded record can be either a new cataloging record OR maintenance to an existing holding library record

Results in: algorithm being run and if incoming record or existing record with changes is "better" than current master record, master record is replaced. If not "better", incoming record results in holding library being listed as owning if not already listed as having.

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3. Withdrawals made by master record library

Results in: Listing for the master library being deleted, but master record remains in database until "better" record is uploaded (see step 2 above)

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4. Withdrawals made by non-master record library

Results in: listing for the non-master library is deleted

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With model 2: master record with full records of non-master libraries on UIAS server

1. Record is uploaded from master record library

Results in: same as in model 1

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2. Record is uploaded from non-master record library -- uploaded record could be either a new holding library OR maintenance to an existing holding library record

Results in: The same as with model 1 except that non-master record is preserved on server. Non -Master record that was uploaded overlays the existing record from that library if previous record exists.

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3. Withdrawals made by master record library

Results in: same as with model 1

OR

Algorithm selects a new master record from remaining attached bibliographic record(s) & old master record is deleted

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4. Withdrawals made by non-master record library

Results in: Same as with model 1 except the full non-master record is deleted
 
  UIAS Task Force for Database Standards and Management