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rfc:rfc2220

Network Working Group R. Guenther Request for Comments: 2220 Library of Congress Category: Informational Network Devt. & MARC Standards Office

                                                         October 1997
                 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.

Guenther Informational [Page 1] RFC 2220 Application/MARC Content-type October 1997

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
 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.

Guenther Informational [Page 2] RFC 2220 Application/MARC Content-type October 1997

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

Guenther Informational [Page 3] RFC 2220 Application/MARC Content-type October 1997

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."

Guenther Informational [Page 4]

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