Variable Data Fields
Definition and scope:
The variable data fields include fields 01X-9XX. They are grouped into blocks according to the first character of the tag , which identifies the function of the data within the record. The type of information in the field is identified by the remainder of the tag. Each field is identified by a field tag in the Directory . Within variable data fields, two kinds of content designation are used: two indicator positions , stored at the beginning of each field, and a two-character subfield code preceding each data element within the field.
The following are General Information sections for groups of fields with similar characteristics.:
Names and Terms: Indicators, subfield codes, and input conventions for all the fields which include headings
follow similar patterns
. For detailed information, select: Names and Terms: X00-X85 Fields
.
Tracings and References: Describes tracing fields, reference fields, simple and complex cross references including examples, input conventions, etc. For detailed information, select: Tracing and Reference Fields - General Information
.
Heading Linking Entries: Includes special indicator and subfields used with 7XX fields, input conventions, history, etc. For detailed information, select: 7XX Heading Linking Entries - General Information
.
For information on a specific variable data field, select a topic:
(Shortcut: For information on a particular field, use the Tag List button at the top of the Help window to search by tag or subject area.)
Tag range: Field description:
0XX: Numbers and Codes
1XX: Headings (established and unestablished )
2XX-3XX: Complex Subject References
4XX: See From Tracings
64X: Series Treatment
663-666: Complex Name References
667-68X: Notes
8XX: Location and Alternate Graphics
See also:
Variable Control Fields (00X)
MARC 21 Format for Authority Data: Contents
