MARC21

KNOWLEDGE ORGANISATION

MARC 21

PRESENTATION BYPICHANO KIKON

MOHAMMAD AMEES

A MARC is a MAchine Readable Cataloguing.

It means that a computer can read and interpret the

data of a cataloguing record.

It is a standard used for the exchange of

bibliographic information among computerised

library systems.

INTRODUCTION

The purpose of MARC is to provide a standard

format for the global exchange of bibliographic

information available in Machine Readable

Format in the libraries Worldwide.

Library of Congress, Washington DC was the

first to produced Marc records in October 1966.

PURPOSE

MARC21 is a new name of the harmonized

CANMARC and USMARC formats. The National

Library of Canada and Library of Congress work

together to formulate a common harmonized format

and reconcile the format differences.

MARC21 is bibliographic standard for 21st century.

All MARC Formats are not the same and majority

have ceased.

A FIELD : Each bibliography record is divided

logically into fields. There is a field for author,

a field for title, and so on. These fields are

subdivided into one or more “subfields”. They

are represented by 3-digit tags.

Its Terms and Definitions

A TAG: Each field is associated with 3-digit

number called a “tag”. A tag identifies a field..

The kind of data.. That follows. The tag is

always the first 3-digit. Here the number 100

is the tag.

100 1# $a Amenla AO

INDICATORS: Two character position follows each tag ( with the exception of field 001 through 009). One or both of these character position may be used for indicators. When an indicator position is not used, the indicator is referred to as “undefined” and the position is left blank. It is the convention to represent a blank, or undefined, indicator position by the character “#”.

Record Structure ◦ Leader and Directory

Data content◦Description ◦ Subject heading◦Classification numbers◦ Main and added entries

Content Designation◦Fixed fields◦Variable field

PARTS OF A MARC RECORD

There are five communication formats

◦MARC21 format for Bibliographic data

◦MARC21 format for Authority data

◦MARC21 format for Holding data

◦MARC21format for Classification data

◦MARC21 format for Community Information

MARC21 COMMUNICATION FORMATS

010 tag marks the library of congress control number (LCCN)

020 tag marks the international standard book number (ISBN)

100 tag mark a personal name main entry (author)

245 tag mark the title information (which include the title, other title information and the statement of responsibility)

The tags used most frequently are:

250 tag mark the edition 260 tag marks the publication information

300 tag marks the physical description 490 tag marks the series statement 520 tag marks the annotation or summary note 650 tag marks a topical subject heading 700 tag marks a personal name added entry

(joint author, editor or illustration)

001 32968855 003 OCoLC 005 20020815003300.0 008 950731s1996 nyu 001 0 eng nam a 010 95037705 020 0805041516 :|c$25.00 040 DLC|cDLC|dC#P 049 SJPC|b00 07 19 050 00 HD57.7|b.F37 1996 082 00 658.4/092|220 099 658.4092 100 1 Farkas, Charles M. 245 10 Maximum leadership :|bthe world's leading CEOs share their five strategies for success /|cCharles M. Farkas and Philippe De Backer. 250 1st ed. 260 New York :|bH. Holt,|c1996. 300 xvi, 287 p. ;|c24 cm. 500 Includes index. 650 0 Leadership. 650 0 Success in business. 650 0 Chief executive officers|xAttitudes. 700 1 Backer, Philippe de.

Marc Display

0104041cam2200265a450000100200000000300040002000500170002400800410004101000240008202000250010602000440013104000180017505000240019308200180021710000320023524500870026724600360035425000120039026000370040230000290043950000420046852002200051065000330073 0 6 5 0 0 0 1 2 0 0 7 6 3 ^ # # # 8 9 0 4 8 2 3 0 # / A C /R91^DLC^ 19911106082810.9^891101s1990####maua###j######000#0#eng##,##$a###89048230#/AC/r91^##$a0316107514:$c$12.95^##$a0316107506(pbk.):$c$5.95($6.95can.)^##$aDLC$cDLC$dDLC^00$aGV943.25$b.B74 1990^00$a005.334/2$220^10$aThomas,seanJ.,$d1970-^10$aComputer Science:$bTechnology/$cSeanj.Thomas.^##$a2nd ed.^##$aNewYork :$bLittle,Brown,$cc1990.^##$a227p.:$bill.;$c19cm.^/

MARC21 COMMUNICATION FORMAT:

The first 24 positions are the leader. In this example the leader fills approximately 1/3 of the first line and ends with "4500." Immediately following the leader, the directory begins. Tags are highlighted in green for better understanding. Each individual tag directory is 12 characters long. The first tag is 001. Following each tag, the next four positions show the length of the field. The data in the 001 field (control number) in this record is 20 characters long. The next 5 positions tell the starting point for this field within the data string that follows the directory. The 001 field begins at the 00000 position (the first position is position 0). The next tag is 003, which is 4 characters long and begins at the 20th position (the length of the previous position -- 20 -- added to its starting spot -- 00000 -- equals 20). The next tag is 005. It is 17 characters long and begins at the 24th spot (4 + 20 = 24)

01041cam 2200265 a 450000100200000000300040002000500170002400800410004101000240 0082020002500106020004400131040001800175050002400193082001800217100003200235245008700267246003600354250001200390260003700402300002900439500004200468520022000510650003300730650001200763^###89048230#/AC/r91^DLC^19911106082810.9^891101s1990####maua###j######000#0#eng##^##$a###89048230#/AC/r91^##$a0316107514:$c$12.95^##$a0316107506(pbk.):$c$5.95($6.95Can.)^##$aDLC$cDLC$dDLC^00$aGV943.25$b.B741990^00$a796.334/2$220^ 10$aBrenner, Richard J.,$d1941-^10$aMake the team. $pSoccer :$ba heads up guide to super soccer! /$cR ichard J. Brenner.^30$aHeads up guide to super soc cer.^##$a1st ed.^##$aBoston :$bLittle, Brown,$cc19 90.^##$a127 p. :$bill. ;$c19 cm.^##$a"A Sports illustrated for kids book."^##$aInstructions for impr oving soccer skills. Discusses dribbling, heading, playmaking, defense, conditioning, mental attitud e, how to handle problems with coaches, parents, a nd other players, and the history of soccer.^#0$aS occer$vJuvenile literature.^#1$aSoccer.^\

Tag Length Starts at Tag Length Starts at001 0020 00000 100 0032 00235003 0004 00020 245 0087 00267005 0017 00024 246 0036 00354008 0041 00041 250 0012 00390010 0024 00082 260 0037 00402020 0025 00106 300 0029 00439020 0044 00131 500 0042 00468040 0018 00175 520 0220 00510050 0024 00193 650 0033 00730082 0018 00217 650 0012 00763

This directory tell us:

Leader 01041cam 2200265 a 4500Control No. 001###89048230Control No. ID 003 DLCDTLT 005 19911106082810.9Fixed Data 008 8911s1990 maua j0010engLCCN 010##$A0316107514: $C$12.95ISBN 020##$A0316107506(pbk.): $c$5.95 ($6.95can.)Cat.Source 040##$aDLC $CDLC $DLC

SAMPLE LOCAL SYSTEM RECORD

LC Call No. 050 00$aGV943.25

$b.B74 1990

Dewey No. 005 00 $a 796.334/2

$2 20

ME:Pers Name 100 1#$a Tomas, Sean, J.,

$d 1970-

Title 245 10 $a Computer Science:

$b Technology/

$cBy Sean J. Thomas.

Edition 250##$a 2nd ed.

Publication 260##$a New York:

$b Little,Brown,

$c c1990.

Phys Desc 300##$a227p:

$bill.:

$c19cm.

TITLE: Computer Science: Technology/By Sean J .Thomas.AUTHOR: Thomas Sean J.PUBLISHED: Little, Brown, c1990.MATERIAL:227p.

FORMATTED DISPLAYS:

The MARC Record structure consists of three

main component : the leader, the directory and the

variable fields. LEADER: The leader contains the data elements

which provides basic information about the item

and information for the processing of record. The

leader is fixed in length and is 24 characters

beginning from 00 to 23.

STRUCTURE OF MARC21 RECORD

00-04 Logical record length ( calculated by the computer) 05 Record status 06 Type of record 07 Bibliographic level 08 type of control 09 character coding scheme 10 Indicator count (always “2”) 11 Subfield code count (always “2”) 12-16 Base address of data ( calculated by the computer)

17 Encoding level 18 Descriptive cataloguing form 19 Linked record requirement 20 length of the length of field portion (always4) 21 Length of the starting character position portion

(always 5) 22 Length of the implementation defined portion

(always 0) 23 Undefined (always “0”)

A directory contains information about the tag ,

starting location of each variable field within a

record. Each entry is 12 character positions in

length. The directory is constructed by the

computer program from the bibliographic record,

based on the information contained in the record.

DIRECTORY

As the name suggests, the fields belonging to the variable fields can be of variable field length.

The variable field can be broadly device into the following categories i.e.

0XX - Control information, numbers 1XX – Main entry 2XX – Title , area of responsibility, edition, imprint etc. 3XX- Physical description, etc. 4XX – Series statement 5XX – Notes 6XX – Subject added entries

VARIABLE FIELDS

7XX – Added entries other than subject or series 8XX- Series added entries 9XX- Local fields XX is a digit code between 0 to 9 and represent a variety of

related pieces of information about a particular block. E.G 1XX is meant for defining the main entry and the

following fields are available. 100 – Main Entry under personal Name 110 - Main Entry under corporate Name

100 Main entry – Personal Name (NR) Indicator 1 : Type of personal name main entry

◦ 0 -Forename

◦1- Surname◦3- family name

Indicator 2: Undefined ◦ $a -personal name

◦$b - numeration◦$c -titles and other word associated◦with name ®

◦$q-fuller form of name◦$d-dates associated with a name

(generally year of birth)

E,g 1001 # $a Gregory, Ruth w.$q (Ruth Williame)$d 1910

1. MARC 21 : Cataloguing Format For 21st Century. Aswal.S.R, 2004.

IGNOU Material Wikipedia

REFERENCES

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