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- Network Working Group R. Guenther
- Request for Comments: 2220 Library of Congress
- Category: Informational Network Devt. & MARC Standards Office
- October 1997
-
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- The Application/MARC Content-type
-
- Status of this Memo
-
- This memo provides information for the Internet community. It does
- not specify an Internet standard of any kind. Distribution of this
- memo is unlimited.
-
- Copyright Notice
-
- Copyright (C) The Internet Society (1997). All Rights Reserved.
-
- Abstract
-
- This memorandum provides a mechanism for representing objects which
- are files of Machine-Readable Cataloging records (MARC). The MARC
- formats are standards for the representation and communication of
- bibliographic and related information. A MARC record contains
- metadata for an information resource following MARC format
- specifications.
-
- 1. Introduction
-
- The MARC formats are sets of codes and content designators defined
- for encoding metadata for five types of data: bibliographic,
- holdings, authority, classification, and community information. The
- structure of MARC records is an implementation of national and
- international standards, ANSI Z39.2 (Information Interchange Format)
- and ISO 2709 (Format for Information Interchange). Codes and
- conventions in the formats identify and characterize data elements
- within a record and support the manipulation of those data.
-
- MARC formats are communication formats, primarily designed to provide
- specification for the exchange of bibliographic and related
- information between systems. They are widely used in a variety of
- exchange and processing environments. They do not mandate internal
- storage or display formats to be used by different systems.
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- Guenther Informational [Page 1]
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- RFC 2220 Application/MARC Content-type October 1997
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- 2. Definition
-
- Since there are different flavors of MARC which would be processed by
- different applications, this content-type/subtype refers to the
- harmonized USMARC/CANMARC specification. Additional content-
- types/subtypes may be defined in the future (e.g.
- application/unimarc).
-
- MARC records involve three elements: the record structure, content
- designation, and data content. Only those records that contain all
- three elements according to the standard would use this content-
- type/subtype, i.e. content extracted from the structure would not.
- Since MARC does not mandate an internal storage format, parameters
- have not been assigned to specific implementations (e.g. OCLC-MARC,
- LC-MARC, etc.). In addition, parameters have not been defined for
- the specific type of MARC format (e.g. bibliographic, authority,
- holdings), since the information is contained in the Leader portion
- of the record.
-
- 3. Registration Information
-
- To: ietf-types@iana.org
-
- Media type name: application
-
- Media subtype name: marc
-
- Required parameters: None
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- Optional parameters: None
-
- Encoding considerations: MARC records may contain long lines and/or
- arbitrary octet values. The base64 content-transfer-encoding is
- recommended for transmission of MARC over electronic mail.
-
- 4. Security Considerations
-
- There are no known security risks associated with the use or viewing
- of MARC data. A MARC record may have security classification
- associated with the document it describes or metadata in that record.
- Although this does not present any security risk to the user of MARC
- data, it may provide an opportunity for a security breach for the
- source of classified MARC data.
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- Guenther Informational [Page 2]
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- RFC 2220 Application/MARC Content-type October 1997
-
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- 5. Interoperability Considerations
-
- MARC is a communication format and is designed for interoperability
- between different systems that may store data in local formats
- internally.
-
- 6. Published Specification
-
- "USMARC Format for Bibliographic Data"; "USMARC Format for Authority
- Data"; "USMARC Format for Holdings Data"; "USMARC Format for
- Classification Data"; "USMARC Format for Community Information".
-
- Additional information:
- File extension: .mrc
- OID: 1.2.840.10003.5.10
-
- Person & email address to contact for further information:
- Network Development & MARC Standards Office <ndmso@loc.gov>
- 101 Independence Ave. SE
- Library of Congress
- Washington, DC 20540-4102 U.S.A.
-
- 7. References
-
- Library of Congress, Network Development and MARC Standards
- Office, "USMARC Format for Bibliographic Data", 1994- .
-
- "USMARC Format for Authority Data", 1993- .
-
- "USMARC Format for Holdings Data", 1989- .
-
- "USMARC Format for Classification Data", 1991- .
-
- "USMARC Format for Community Information", 1993- .
-
- 8. Author's Address
-
- Rebecca Guenther
- Network Development & MARC Standards Office
- Library of Congress
- 101 Independence Ave. SE
- Washington, DC 20540-4102 U.S.A.
-
- Phone: +1 (202) 707-5092
- FAX: +1 (202) 707-0115
- EMail: rgue@loc.gov
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- Guenther Informational [Page 3]
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- RFC 2220 Application/MARC Content-type October 1997
-
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- 9. Full Copyright Statement
-
- Copyright (C) The Internet Society (1997). All Rights Reserved.
-
- This document and translations of it may be copied and furnished to
- others, and derivative works that comment on or otherwise explain it
- or assist in its implmentation may be prepared, copied, published
- andand distributed, in whole or in part, without restriction of any
- kind, provided that the above copyright notice and this paragraph are
- included on all such copies and derivative works. However, this
- document itself may not be modified in any way, such as by removing
- the copyright notice or references to the Internet Society or other
- Internet organizations, except as needed for the purpose of
- developing Internet standards in which case the procedures for
- copyrights defined in the Internet Standards process must be
- followed, or as required to translate it into languages other than
- English.
-
- The limited permissions granted above are perpetual and will not be
- revoked by the Internet Society or its successors or assigns.
-
- This document and the information contained herein is provided on an
- "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING
- TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
- BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION
- HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF
- MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE."
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- Guenther Informational [Page 4]
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