If a heading is no longer valid, for instance, if the authority record has been deleted, the link between the heading and the authority record will be broken. When linked headings in CORC are updated, the heading in the master record in WorldCat will also be updated. Constant Data Enhancements OCLC implemented several enhancements to the CORC system s implementation of Constant Data Records, October 1, 2000. When users create constant data and submit the record, they are prompted to give the constant data a name. Users can search their institution s constant data file by constant data name to retrieve a specific constant data record.
Users can also retrieve a list of all of the institution s constant data records.
When a constant data record is no longer needed in the institution, users can delete it. Any user with an authorization number under the same institution symbol can access any of the stored constant data records for the institution. One person can create a constant data record and share it with others working with the same kind of data. The option to add fixed field elements, variable fields, or the whole record can be set only while editing the current constant data in the MARC view, not when applying it. Current constant data may be a working copy of a record in your library s constant data file.