What is OCLC's PRISM Service?

Scope

• PRISM is OCLC's primary bibliographic service for libraries.
• It provides access to the OCLC database bibliographic database, known as WorldCat or the Online Union Catalog, a database of over 45 million bibliographic records contributed by over 35,000 member libraries.

Services supported by the PRISM service:

• Obtaining catalog records for a local LAS electronic catalog (a process usually known as copy cataloging).
• Checking on records for inter-library loan (ILL).
• Affirming the correct names of authors, titles, and so forth in Authority Files
• Acquisitions through OCLC.

Record format:

• The records are in OCLC's implementation of the Library of Congress's (LC) Machine-Readable Cataloging (MARC) format, otherwise known as OCLC-MARC.

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