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844 Name of Unit (NR)

Find the field definition and scope, indicators, subfield codes, and guidelines for applying content designations for field 844.

Indicators and subfield codes

First Indicator

Sin definir

en blanco          Sin definir

Second Indicator

Sin definir

en blanco          Sin definir

Subfield Codes

‡a        Action (NR)

‡8        Field link and sequence number (R)

 

Field definition and scope

This field contains the name or title appearing on an item. The item may be a basic bibliographic unit, supplementary material, or an index. The name of the unit consists of its bibliographic title or a supplied designation describing it. A supplement or index designation used as a caption is contained in fields 853-855 (Captions and Pattern), subfield ‡a-‡h (Enumeration captions).

Guidelines for applying content designations

Indicators

Both indicators are undefined; each contains a blank (en blanco).

First Indicator - Undefined

en blanco - Undefined

Second Indicator - Undefined

en blanco - Undefined

Subfields

‡a - Action

Subfield ‡a contains the bibliographic title of the unit or a supplied designation describing it.

844              Updates

854   0   1    ‡8 1 ‡a (year) ‡b no. ‡i (month)

864   4   1    ‡8 1.1 ‡a 1985 ‡b 1 ‡i 01

864   4   1    ‡8 1.2 ‡a 1985 ‡b 2 ‡i 02

‡8 - Field link and sequence number

Subfield ‡8 contains data that identifies linked fields and may also propose a sequence for the linked fields. Subfield ‡8 may be repeated to link a field to more than one other group of fields.

The structure and syntax for the field link and sequence number subfield is: ‡8<linking number>.<sequence number>

The linking number is the first data element in the subfield and required if the subfield is used. It is a variable-length whole number that occurs in subfield ‡8 in all fields that are to be linked. Fields with the same linking number are considered linked. A linking number of "0" (zero) is not used in this field.

The sequence number is separated from the linking number by a period "." and may be optional. It is a variable-length whole number that may be used to indicate the relative order for display of the linked fields (lower sequence numbers displaying before higher ones).

Subfield ‡8 is always the first subfield in the field when it is used.

Ejemplos

844               Current developments

853   0   0    ‡8 1 ‡a v.

863   4   0    ‡8 1.1 ‡a 1-16

863   4   0    ‡8 1.2 ‡a 18

844               Cases

853   0   0    ‡8 1 ‡a v.

863   4   0    ‡8 1.1 ‡a 1-22

844               Decisions

853   0   0    ‡8 1 ‡a v.

863   4   0    ‡8 1.1 ‡a 23-24
[Because each unit has a different title, three holdings records are necessary.]

844               Updates

854   0   1     ‡8 1 ‡a (year) ‡b no. ‡i (month)

864   4   1     ‡8 1.1 ‡a 1985 ‡b 1 ‡i 01

864   4   1     1985 ‡b2 ‡i 02