PROPOSAL NO.: 2002-02

DATE: December 18, 2001
REVISED:

NAME: Definition of Subfields $u, $y and $3 in Fields 508 and 511 of the MARC 21 Bibliographic Format

SOURCE: Research Libraries Group

SUMMARY: This paper proposes defining subfields $u, $y and $3 in fields 508 and 511 to provide remote access to complete lists of credit notes and to allow the grouping of credit notes to be specific to a particular part of a multipart item.

KEYWORDS: Creation/Production Credits Note (BD); Field 508 (BD); Field 511 (BD); Participant or Performer Note (BD); Subfield $u, in field 508 (BD); Subfield $u, in field 511 (BD); Subfield $y, in field 508 (BD); Subfield $3, in field 508 (BD); Subfield $3, in field 511 (BD)

RELATED: 99-08 (May 1999) 2000-06 (January 2000); 2000-07 (June 2000); 2001-07 (June 2001)

STATUS/COMMENTS:

12/18/01 - Made available to the MARC 21 community for discussion.

01/21/02 - Results of the MARC Advisory Committee discussion - Rejected. Participants did not feel that there was an immediate need for the definition of subfields $u, $y and $3 in fields 508 and 511. The proposal may be raised in the future when a need for the subfields is expressed.

03/20/02 - Results of LC/NLC review - Agreed with the MARBI decisions.

PROPOSAL NO. 2002-02: Definition of Subfields $u, $y and $3 in Fields 508 and 511

1. BACKGROUND

1.1 Fields 508 and 511

Field 508 (Creation/Production Credits Note) records the credits for persons or organizations, other than members of the cast, who have participated in the creation and/or production of the work. This repeatable field is used to credit the producer, director, film editor, consultant, etc., of a production in music and visual resources. Field 508 contains the following data elements:

Indicators
Undefined

Subfields
$a - Creation/production credits note (NR)
$6 - Linkage (NR)
$8 - Field link and sequence number (R)

Field 511 (Participant or Performer Note) contains a note giving information about the participants, players, narrators, presenters or performers for items, such as films, musicals and recordings. This repeatable field is used to credit on-stage performers in productions. Field 511 contains the following data elements:

First Indicator
Display constant controller
0 - No display constant generated
1 - Cast

Second Indicator
Undefined

Subfields
$a - Participant or performer note (NR)
$6 - Linkage (NR)
$8 - Field link and sequence number (R)

In the discussion of Proposal 2001-07 (Repeatability of Field 508 in the MARC 21 Bibliographic Format), participants felt that defining subfield $u in both fields 508 and 511 would provide remote access to complete lists of credit and production notes. Participants also felt that defining subfield $3 in fields 508 and 511 would allow for grouping credits that are specific to a particular part of a multipart item.

2. DISCUSSION

2.1 Definition of Subfield $u

In many fields of the MARC 21 formats, subfield $u (Uniform Resource Identifier) contains a URL or URN to provide electronic access data in a standard syntax to an electronic item. Defining subfield $u in fields 508 and 511 would allow catalogers to link to online credit information which is provided by several online directories (such as the Internet Movie Database at: http://us.imdb.com/). This data often contains value-added information, such as ratings, photos, and biographical information about those credited that may not be appropriate to include in the record.

Display Example: Cast: http://us.imdb.com/Title?0124315

2.2 Definition of Subfield $y

During the discussion of Proposal 2000-06 (Defining URI Subfields), the MARC Advisory Committee agreed that a there should be a means of providing display text when only a URI is given in the field, either as an indicator value or a subfield. Subsequently, in Proposal 2000-07, a technique was provided to record link text to display with a URL in field 856 (Electronic location and access), subfield $y (Link text). Subfield $y could also be defined in field 508 for this purpose. Because the first indicator of field 511 is defined as "Display constant controller," there is no need to define subfield $y in it.

2.3 Definition of Subfield $3

Subfield $3 (Materials specified) contains information that specifies the part of the bibliographic item to which a field applies. It is also included in field 856 (Electronic location and access) to indicate the part of the resource to which the URI applies. Because many new DVD videos include corresponding sound tracks, copies of production diaries, actor interviews, etc., subfield $3 would allow catalogers to group the production credits for each part separately. Moreover, defining subfield $3 in fields 508 and 511 would allow catalogers to group credits of collected works separately. Although many cataloging agencies may prefer coding a detailed 505 field (Formatted contents note) to accommodate this information, the option to code detailed 508 and 511 fields may enhance display and retrieval of this information, especially in systems that index these fields.

The following example is of a sound recording with multiple works. Parentheses have been used to indicate which credits belong to which work.

One may use subfield $3, however, to organize this information in field 511 more clearly. For example,

The next example is of a videorecording that includes two productions. A detailed 505 note and brackets in the 511 and 508 fields have been used to differentiate the credits of the two films.

Subfield $3 may facilitate better organization of this credit information. For example,

Another example of using subfield $3 in field 511 is:

3. PROPOSED CHANGES

• Define subfield $u in fields 508 (Creation/Production Credits Notes) and 511 (Participant or Performer Note) as:

$u - Uniform Resource Identifier (R)
Subfield $u contains the Uniform Resource Identifier (URI), for example a URL or URN, which provides electronic access data in a standard syntax. This data can be used for automated access to an electronic item using one of the Internet protocols.

• Define subfield $3 (Materials specified) in fields 508 (Creation/Production Credits Notes) and 511 (Participant or Performer Note) as:

$3 - Matersial specified (NR)
Subfield $3 contains information that specifies the part of the bibliographic item to which the field applies.

• Define subfield $y (Link text) in field 508 (Creation/Production Credits Notes) as:

$y - Link text (R)
Subfield $y contains link text which is used for display in place of the URL in subfield $u. When subfield $y is present, applications should use the contents of subfield $y as the link instead of the content of subfield $u when linking to the destination in subfield $u. The use of the link text is independent of any decision concerning the second indicator value.

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