The INN-Reach system performs complex operations with matching after records are contributed to the OhioLINK Central Catalog. Any situation when a bibliographic record is changed prompts some activity with the matching algorithm. (By the way, the program that manages all matching activity at INN-Reach sites is called "olink.")
Changing an Existing INN-Reach Catalog Record
(adapted from the INN-Reach Manual, page 103344)
When a Bibliographic record is changed on the Local System, the changed record is transmitted to the Central Catalog. This record is compared with its earlier version on the Central Catalog using the following procedures:
- If the contributing library is the owner of the record and no other library's holdings are attached to the master record, the existing record is replaced with the incoming record. If either the bibliographic utility number or ISBN has changed in the record, then matching is performed to see if the record matches any others in the system.
- If the contributing library is not the owner of the master record, but the Encoding Level of the incoming record is now greater than the existing master record, the incoming record overlays the existing record and becomes the new master record. The contributing library becomes the new owner.
- If the contributing library is the owner of the master record and other library's holdings are attached or if the contributing library is not the owner of the record, the master record splits if there is no match according to the matching algorithm used by your INN-Reach system.
- If a split occurs, and the incoming record is not from the site that holds the master record, the incoming record becomes a new master record, owned by the contributing site, and is subject to matching with the database.
- If a split occurs, and the incoming record is from the site that holds the master record, the Central System attaches the existing holdings to a new master record selected from among the other contributing sites, and both master records are subject to matching with the database as specified.
- Whether a split occurs or not, if either the bibliographic utility number or ISBN has changed, then matching, as specified by your library's strategy for matching records, is performed to see if the incoming record matches any others in the system.
March 15, 2002
updated September 2008
