Total Database Replacement

A TDR is when a library submits by uploading a complete MARC record database of the library’s local catalog intending to replace all that library's holdings currently in the Locator.  All the library’s current holdings in the Locator are deleted and the replacement records and holdings are the Locator.  Any record not meeting the MARC Record Input Standards is discarded and not added to the Locator.

A Total Database Replacement:

• will synchronize a library's holdings in the Locator with the local database. 
• is good to do after a major weeding project
• is good to do after a retrospective conversion project
  
• can only be done for a library with an automated library system.
  

Any library wishing to do a TDR should consult with the Marie Harms, the State Library cataloging consultant, or fill out a TDR request form