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RFC2220 - The Application/MARC Content-type

王朝other·作者佚名  2008-05-31
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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

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.

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.

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

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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