OCLC-MARC records describes records produced since November 1993. It also lists documentation that describes records produced before November 1993.
OCLC-MARC Records describes the record structure, character sets, and exchange media formatting for OCLC-MARC records via electronic file transfer, and via export. This manual also provides a list of content designators and their names.
Audience for this manual
OCLC-MARC Records assumes familiarity with ANSI (American National Standards Institute) standards associated with MARC record processing. It assumes a general knowledge of computerized data processing and data processing in libraries.
Type of records
OCLC-MARC records can be bibliographic records or authority records. An OCLC-MARC record is composed of three elements:
- The record structure
- The content designation
- The data content of the record
OCLC-MARC record structure
OCLC-MARC record structure is an implementation of the ANSI Information Interchange Format (ANSI Z39.2). This manual describes OCLC-MARC record structure following the outline of ANSI Z39.2 and indicates the specific choices made for OCLC’s implementation of the standard.
OCLC-MARC record content designation
This document lists tags, fields, indicators, and data elements for OCLC’s implementation of ANSI Z39.2. Much of the information in this document is based on information distributed by the Library of Congress in the following publications: MARC 21 Format for Bibliographic Data, MARC 21 Format for Authority Data, and MARC 21 Format for Holdings Data.
OCLC-MARC record content
Throughout this document, the following typographical conventions are used:
- Typographical conventions - Table
convention description 0 The graphic 0 represents the digit zero. This character must be distinguished from the uppercase alphabet letter O. The graphic symbol is used for blank. ‡ The graphic symbol ‡ is used for the delimiter portion of a subfield code. / The graphic / is used to specify character positions of the leader, directory, and fields 007 and 008, e.g., leader/06, 007/00, and 008/12. 1 The graphic 1 represents the digit one. This character must be distinguished from the lowercase alphabet letter l (el) and uppercase alphabet letter I (eye). ■ The graphic ■ represents a fill character.
Previous editions of documentation
Since record processing specifications change, OCLC makes the following documents available if you need to process OCLC-MARC records produced during the periods listed:
- Previous editions of documentation - Table
records produced document November 1993–December 2000 Tape and Export Record Formats Change Notices 1–9 and Technical Bulletins 221, 228, 231, 232, and 236–241 November 1990–November 1993 OCLC-MARC Tape and Export Record Formats July 1989–November 1990 OCLC-MARC Tape Format, Second edition September 1984–July 1989 OCLC-MARC Tape Format, First edition January 1981–September 1984 OCLC-MARC Subscription Service Documentation, Fourth edition April 1978–January 1981 OCLC-MARC Subscription Service Documentation, Third edition December 1976–April 1978 OCLC-MARC Subscription Service Documentation, Second edition May 1974–December 1976 OCLC-MARC Distribution Service Specifications for Magnetic Tapes containing Catalog Records for Monographs and Serials, First edition
Each document covers different time periods. New editions do not supersede previous editions. Do not discard previous editions.
Use of the word obsolete
In OCLC-MARC Records, any element, value, field, subfield, etc., marked obsolete is no longer valid. Current records will not contain these invalid codes. However, records supplied from archives (e.g., OCLC Bibliographic Snapshot service records) may contain obsolete MARC coding.
In addition to export from OCLC Connexion™, the following OCLC services provide OCLC-MARC records:
- OCLC services - Table
oclc service description OCLC Bibliographic Record Notification service Provides upgraded bibliographic records to institutions that have previously received and added holdings to a less-than-full-level bibliographic record in WorldCat® (the OCLC Online Union Catalog). OCLC GovDoc service Provides subscribers with bibliographic records and/or cards for specified government documents. OCLC Bibliographic Snapshot service Provides partial or complete machine-readable archives of bibliographic records. Also can supply out-of-warranty tapes. OCLC Cataloging Partners service Provides copy cataloging for non-serial titles. PromptCat links order fulfillment by a book vendor to the delivery of records to the library. OCLC Contract Cataloging services Provides customized solutions to help libraries eliminate cataloging backlogs, manage current cataloging, or handle special formats. Libraries receive full OCLC-MARC bibliographic records. OCLC WorldCat®→Collection Sets Provides bibliographic records via catalog cards, tape and/or electronic files for microform sets cataloged under Major Microforms.
OCLC-MARC Subscription service
Provides subscribers copies of their online OCLC system bibliographic transactions. Multi-institution files, which include records of other OCLC participants, may also be requested.