Re-authorizing the Library's Database

For libraries lacking the staff or resources to maintain headings following batch authority control, exporting and re-authorizing the entire database every few years may be the only way to keep controlled headings in sync with LC. Following re-authorization, the library's bibliographic records are re-loaded into the local system database by overlaying on the ILS's record ID control number. At the same time, new files of national level authority records (LC, LC Children's, LC Genre/Form, and NLM MeSH) are provided, custom to the headings in the bibliographic file. Therefore, the library should be prepared to delete all its existing nationally distributed and local authority records.