Both alternatives allow the input of local data, such as call number and copy information, so each record reflects the individuality of your library. The diskettes or tapes thus created are sent to a vendor for machine matching against its database. Batch conversion services usually do not allow original record creation. As a result, nonmatches must be resolved by some other method. The cost for batch conversion is generally a unit charge based on the number of records converted.
Some vendors charge a processing fee for each batch processed.
Others require a minimum amount of processing per month or the library is assessed a penalty fee. Your library may also want to consider hiring additional staff to do the data entry. A database of this size usually has hardware and software supporting all cataloging functions. Shared databases and the functionality of the hardware and software are usually built with cooperative cataloging efforts in mind. With this option, your staff can enjoy complete control over certain aspects of the retrospective conversion project.