This power point presentation gives an overview idea of basic features , structure and use of ISO 2709.Each of it's structural elements have been described with diagrams and the ultimate form of a ISO 2709 Bibliographic record has been illustrated with a picture.

1. SHAHIL TP
&
SIVAKUMAR
&
REJITHA M

2. They are the formats which are used to
describe the arrangement or structure of
computer readable record of bibliographic
data.

3. Bibliographic data commonly contain
•Fields;
Different fields in a bibliographic data are title, name of
author, subject, edition, publication data , physical
description of the book , notes , standard numbers (ISBN,
ISSN etc.)

4. Bibliographic Levels
• Serials.
• Monographs.
• Analytic.
• Collection.

5. • Monograph; An item that issued as a single
physical piece. Ex; a book, thesis, report etc.
• Analytic; An item which is a part of a parent item.
Ex; a chapter from a book, article from a journal etc.

6. • Serial; A publication issued periodically
Ex; journals, magazines etc.
• Collection; An item issued in two or more physical
pieces
Ex; multivolumed encyclopedia.

7. Bibliographic Standards
• Bibliographic Description -Cataloguing Codes
- ISBDs
- AACR
- CCC etc
• Unique Identification Codes – ISBN; ISSN;
etc

8.  Fields; fields are title, author, subject, edition etc.
 Repeatable field ; an entity occurs more than once in a
field.
◦ Ex: 2nd author, 3rd author
 Subfield; a separately identifiable part of a field.
◦ Ex: Publication data is a field;
 Place of Publication, Name of the Publisher, Date of Publication
are subfields.

9. Exchange of Data
• Effective exchange of bibliographic data
between agencies can be accomplished only if
the records confirm in respect of these
components such as the structure, the content
designators and the data elements.

10.  The following are various tools (Application
softwares) which are used for managing
bibliographic data.
 Bibliographic Data Management Software
 Library Automation Software
 Information System Management Software.

11. International bibliographic
Formats
• ISO 2709
• UNIMARC
• MARC21
• CCF

12.  It is an International format for
information interchange.
 It was developed for the exchange of
bibliographic record on magnetic tapes.

13. • Developed by Henriette avram in late 1960’s.
• First version was published in 1973.
• Revised and second edition was published in 1981.
• Latest version is ISO 2709:2008
•Its American counterpart is called as ANSI Z39.2

14. ISO 2709;Elements
• It Consists of 4 elements.
1. Record label
2. Directory
3. Bibliographic data fields
4. Record separator

15. Record Label
• Contains data that identify to the system, the type of
record contains information necessary for the
processing of the record such as the total number of
characters in the record and the length of various
elements of the record.
• 24 Characters fixed length field to every record.
• Contains various subunits and each have value(s)
according to the record.

16. Directory
• Contains ‘content designator’ for each data
field followed by an indication of the position
in the record where the data relating to that
field start and the length of the field.
• If a field is repeated, it has two entries in the
directory, one for each appearance.

17. Directory - Structure
Tag Length of
the Data
Field
Starting
Character
Position
Segment
Identifier
Occurrence
Identifier
3 characters 4 characters 5 Characters 1 character 1 Character
A three character
code identifying
the data field which
corresponds to
directory entry
A four-digit number
showing how many
characters are
occupied the data
field, including
indicators and data
field separator but
excluding the record
separator code if the
data field is the last
field in the record.
A five-digit
number giving the
position of the
first character of
the data field
relative to the base
address of data,
i.e. the first
character of the
first of the data
field
A single character
(chosen from 0-9
and/or A-Z) which
designates the
data field as being
a member of
particular segment
A single character
(chosen from 0-9
and A-Z) which
differentiates
multiple
occurrences of the
data fields that
carry the same tag
within the same
record segment

18. Data Field
• The last components are the form and content of the
data elements, varies according to the ‘cataloguing
rules’ used as well as according to the way the
different data elements prescribed by the rules and
divided up and separately identified by the format.
• A variable-length portion of the particular category of
data associated with one entry in the directory. A data
field may contain one or more subfield.

19. Data Field - Structure
Indicators Subfield
Identifier
Subfield Field
Separator
2 characters
2 characters
Variable 1 Character

20.  the final character of each record. This will
always be a single character.

21. Content Designators
• represented in most bibliographic formats by
Tags
indicators
subfield codes.
• Different agencies have theirs own content
designators.
• It is possible to convert the content designators
automatically in order to convert data from one
format to another.

22. Tags
• Three digit numeric value used as identifier
known as tag .

23. Indicators
• Indicators, where they are used, appear at the
beginning of each field in the data portion of
the record.
• They often qualify the tag.

24. Subfield Codes
• Subfield Identifier – a characters preceding
with a subfield code. For example, ‘$’ sign is
used as subfield identifier in UNIMARC
• Subfield Code – a character preceding and
identifying a subfield. For Example, subfield
‘a’ is title proper in the ‘title and statement of
responsibility’