MARC Flashcards
MARC
Machine-Readable Cataloguing
MARC Definition
“Machine-readable” means that a computer can read and interpret the data in the cataloguing record.
MARC Origin
- Developed at the Library of Congress in the 1960s by programmer Henriette Avram.
- Completed the MARC Pilot Project in 1968.
- By 1971, MARC had become the US national standard for dissemination of bibliographic data.
- By 1973, MARC became the international standard.
- MARC 21 was created in 1999 (as a harmonisation of the U.S. and Canadian MARC formats.
MARC Format
245 10 $a Lifereimagined
245 = Tag
10 = Indicator
$ = Delimiter
a = Subfield Code
$a Lifereimagined = Field
Lifereimagined = Subfield
Field
- The place provided for each piece of bibliographic information (author, title, call number).
- The best file structure allows for records with an unlimited number of fields and field lengths, as not all titles are the same length.
- Each field is associated with a 3-digit number called a tag.
- Fields are divided into subfields.
Tag
Identifies the field (the kind of data) that follows.
Indicators
- Two character positions that follow each tag.
- Sometimes an indicator is undefined or left blank.
First Indicator
Value of 0
Means a title main entry is involved, no additional tracing required.
Value of 1
There should be a separate title entry in the catalogue.
Second Indicator
(Non-filling characters)
Displays the number of characters at the beginning of the field to be disregarded
E.g. 4
“The Emperor’s New Clothes”
- Disregard “T” “h” “e” “space”
- File under “emperor’s”
Subfield Code
One lowercase letter followed by a delimiter.
Delimiter
A character used to separate subfields.
Different software programs use different characters
E.g.
@ $ _ “
Leader
The first 24 characters of the record.
Directory
Tells what tags are in the record and where they are placed (by a count of the characters to the position where each field begins)
010
LCC Control Number (LCCN)
020
ISBN
100
Personal Name Main Entry
245
Title Information
Includes
- Title
- Other title information
- Statement of Responsibility
250
Edition
*First indicator always left blank.
260
Publication Information
*First indicator always left blank.
300
Physical Description
490
Series Statement
520
Annotation or Summary Note
650
Topical Subject Heading
700
Personal Name Added Entry
900s
Local Use
E.g. Local Barcode Numbers