462 Subset Level

Field Definition

The specifications below are in addition to those given at the beginning of this block under 4-- STRUCTURE OF LINKING ENTRY FIELDS.

This field is used to identify hierarchical links to items at the subset level. The record to which the link is made is at the subset level, and the record containing this field is at the piece, subset, or set level.

Occurrence

Optional. Any number of linking fields may be included in a record. For certain categories of linking fields (notably 46- Level linking fields) there is a restriction on the type of link which may be made. Details are given in Notes on Field Contents for such fields.

Indicators

Indicator 1: blank (not defined)

Indicator 2: Note Indicator

The second indicator indicates whether the agency providing the record would use the data in this field to make a note for print or other displays of the record. If a note is not required, this indicator should be set to 0 (EX 1, 4, 6). The kinds of notes envisaged being created using this data are illustrated in the examples (EX 2, 3, 5). When the record is displayed, the specific field tag may be translated into text that describes the exact relationship of the item to which the link is being made and the item being catalogued: the exact wording of the text depends on the practices of the agency receiving the record.

Subfields

$0 Bibliographic Record Identifier

The contents of the 001 field of the item to which the link is being made. Not repeatable. (Optional and not repeatable)

$1 Linking Data

Each $1 (one) subfield contains a data field complete with tag, indicators, and subfield codes. (Optional and repeatable)

$3 Authority Record Number

The contents of the $3 subfield of the field which is the source of the $a or $t in this field. Not repeatable. (Optional and not repeatable)

$5 Institution to Which Field Applies

The contents of the $5 subfield of the field which is the source of the $a or $t in this field. Not repeatable. (Optional and not repeatable)

$a Author

The name of the person, corporate body or family with primary intellectual responsibility for the item to which the link is being made. This may not necessarily be the contents of a 700, 710 or 720 field for that item if the concept of main entry does not exist in the cataloguing rules. Where more than one subfield contributes to the contents, standard punctuation should be applied (EX 6). Not repeatable. (Optional and not repeatable)

$c Place of Publication

The contents of the 210$a subfield(s) of the item to which the link is being made. Not repeatable.

(Optional and not repeatable)

$d Date of Publication

The contents of the 210$d subfield of the item to which the link is being made. Not repeatable.

(Optional and not repeatable)

$e Edition Statement

The contents of the 205$a subfield of the item to which the link is being made. Not repeatable.

(Optional and not repeatable)

$h Number of Section or Part

The contents of the relevant title (200), series (225) or uniform title (500) $h subfield of the item to which the link is being made. Not repeatable.

(Optional and not repeatable)

$i Name of Section or Part

The contents of the relevant title (200), series (225) or uniform title (500) $i subfield of the item to which the link is being made. Not repeatable. (Optional and not repeatable)

$p Physical description

The contents of the relevant physical description 215$a subfield of the item to which the link is being made. Not repeatable. (Optional and not repeatable)

$t Title

The contents of the relevant title (200), series (225) or uniform title (500) subfield(s) of the item to which the link is being made. In the case of a serial, this subfield may hold the contents of the key-title (530) field. Where more than one subfield contributes to the contents, standard punctuation should be applied (EX 6). Mandatory. Not repeatable. (Mandatory and not repeatable)

$u Uniform Resource Locator

The contents of the 856$u subfield of the record which is the source of the $a or $t in this field (488 EX4). Not repeatable. (Optional and not repeatable)

$v Volume Number

The element(s) (number, position in the document) which expresses the relationship between the current item and the item to which the link is being made. Examples of such elements are 200$h and 225$v. Not repeatable. (Optional and not repeatable)

$x International Standard Serial Number

The contents of the 011$a subfield of the item to which the link is being made. Not repeatable. (Optional and not repeatable)

$y International Standard Book Number/ International Standard Music Number

The contents of the 010$a or 013$a subfield of the item to which the link is being made. Not repeatable. (Optional and not repeatable)

$z CODEN

The contents of the 040$a subfield of the item to which the link is being made. Not repeatable. (Optional and not repeatable)

Notes on Field Contents

This field is used only when the record structure emphasizes linking separate records for the data from various levels and a link is made to a unit at the subset level.

A subset is a group of physically separate items identified by a common title, representing a section of a larger set.

Field 462 should generally be used in a record for a piece or a subset to link upward to a higher level subset. The only downward 462 link that should be used is one from a set to a subset. The set will be the highest level in the hierarchy, so the link can be downward.

Examples

Ex. 1:

Embedded fields technique

462 #1$100101431811$1011##$a0143-1811$11010#$aeng$1102##$aGB$12001#$aGuide to wordprocessing systems$1210##$aLondon$cComputer Guides$d1979-

Standard subfields technique

462 #1$001431811$x0143-1811$tGuide to wordprocessing systems$cLondon$d1979-

A downwards link is made from a serial to one of its subserials. As the record exists and is linked both on the source database and in the exchange tape, the control number (0143-1811) and optional details are given.

Ex. 2:

Embedded fields technique

462 #1$1011##$a0267-6079$15301#$aIrish literary studies

530 1#$aIAS AIL-Japan series

Standard subfields technique

462 #1$x0267-6079$tIrish literary studies

530 1#$aIAS AIL-Japan series

An upwards link is made from a subseries dealing with AngloIrish literature in Japan to a series on AngloIrish literature.