The document provides an overview of the MARC 21 format. It discusses that MARC 21 is a standard used for the global exchange of bibliographic information between library systems. It describes the key components of a MARC record including the leader, directory, and variable fields. It also explains some of the common field tags used in MARC 21 records like the 100 tag for main author entry and 245 tag for title information.

1. MARC 21
PRESENTATION BY
PICHANO KIKON
MOHAMMAD AMEES

2.  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.

3.  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.

4.  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.

5.  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.

6.  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

7. 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
“#”.

8.  Record Structure
◦ Leader and Directory
 Data content
◦ Description
◦ Subject heading
◦ Classification numbers
◦ Main and added entries
 Content Designation
◦ Fixed fields
◦ Variable field

9.  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

10.  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)

11.  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)

12. 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.

13. 0104041cam2200265a450000100200000000300040002000
50017000240080041000410100024000820200025001060200
04400131040001800175050002400193082001800217100003
20023524500870026724600360035425000120039026000370
04023000029004395000042004685200220005106500033007
3 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^ 19911106082
810.9^891101s1990####maua###j######000#0#eng##,##$
a###89048230#/AC/r91^##$a0316107514:$c$12.95^##$a
0316107506(pbk.):$c$5.95($6.95can.)^##$aDLC$cD
LC$dDLC^00$aGV943.25$b.B74 1990^00$a005.334/2$220^
10$aThomas,seanJ.,$d1970-^10$aComputer Science:
$bTechnology/$cSeanj.Thomas.^##$a2nd ed.^##$aNew
York :$bLittle,Brown,$cc19
90.^##$a227p.:$bill.;$c19cm.^/

14. 01041cam 2200265 a 450000100200000000300040002000500170002400800410004101000240
008202000250010602000440013104000180017505000240019308200180021710000320023524
500870026724600360035425000120039026000370040230000290043950000420046852002200
0510650003300730650001200763^###89048230#/AC/r91^DLC^19911106082810.9^891101s199
0####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$a
796.334/2$220^ 10$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.^
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)

15. Tag Length Starts at Tag Length Starts at
001 0020 00000 100 0032 00235
003 0004 00020 245 0087 00267
005 0017 00024 246 0036 00354
008 0041 00041 250 0012 00390
010 0024 00082 260 0037 00402
020 0025 00106 300 0029 00439
020 0044 00131 500 0042 00468
040 0018 00175 520 0220 00510
050 0024 00193 650 0033 00730
082 0018 00217 650 0012 00763

16. Leader 01041cam 2200265 a 4500
Control No. 001###89048230
Control No. ID 003 DLC
DTLT 005 19911106082810.9
Fixed Data 008 8911s1990 maua j0010eng
LCCN 010##$A0316107514:
$C$12.95
ISBN 020##$A0316107506(pbk.):
$c$5.95 ($6.95can.)
Cat.Source 040##$aDLC
$CDLC
$DLC

17. 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.

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

19.  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.

20.  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)

21.  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”)

22.  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.

23.  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

24.  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

25.  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 ®

26. ◦ $q-fuller form of name
◦ $d-dates associated with a name
(generally year of birth)
E,g 1001 # $a Gregory, Ruth w.
$q (RuthWilliame)
$d 1910

27.  1. MARC 21 : Cataloguing Format For 21st
Century. Aswal.S.R, 2004.
 IGNOU Material
Wikipedia

28. THANK YOU