Although RDA is intended to be compatible with a number of encoding standards, including MARC21, MODS and Dublin Core, a majority of library systems utilise the MARC21 format. This document outlines the changes that have been made to MARC21 in order to accommodate resource descriptions created using RDA. It also outlines new RDA elements that can be accommodated by MARC21 without requiring any changes.
[1] RDA does not utilise field 245 $h. However, this subfield is still valid.
Content Types, Media Types, and Carrier Types
RDA replaces the general material designation (GMD) and the class of materials concept with three new data elements, Content Type, Media Type, and Carrier Type to assist users in fulfilling FRBR's “select” user task.[1]
Content Types (RDA Section 2, Chapter 6.9)
- Content Type relates to the form of communication through which the work is expressed and the human sense through which it is intended to be perceived. It is a core element in RDA.
- The general content type is already recorded with a one-character code in the LDR/06 in MARC Bibliographic records
- A new field 336 is provided in MARC Bibliographic records and in MARC Authority records to record more specific content type/s in textual form ($a) and/or in three-character coded form ($b). In bibliographic records, it is used in conjunction with LDR/06.
- A list of the terms and three-character codes for field 336 $a and $b, along with the corresponding Leader/06 codes, is available at: Term and Code List for RDA Content Types. The source code for this list to be recorded in field 336 $2 (Source) is rdacontent.
336
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$a tactile notated music $b tcm $2 rdacontent
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Media Types (RDA Section 1, Chapter 3.2)
- Media Type relates to the general type of intermediation device required to view, play, run, etc., the content of the resource.
- Media Type may already be recorded in field 007/00 in MARC Bibliographic records.
- A new field 337 is provided in MARC Bibliographic records and in MARC Holdings records to record more specific media type/s in textual form ($a) and/or in one-character coded form ($b). In bibliographic records, it may be used as an alternative to or in addition to 007/00.
- A list of the terms and one-character codes for field 337 $a and $b, along with the corresponding 007/00 codes, is available at: Term and Code List for RDA Media Types. The source code for this list to be recorded in field 337 $2 (Source) is rdamedia.
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Carrier Types (RDA Section 1, Chapter 3.3)
- Carrier Type relates to the format of the storage medium and housing of the carrier of the resource. It is a core element in RDA. Carrier Type is not the same as Extent, which is recorded in field 300.
- Carrier Type may already be recorded in field 007/01 in MARC Bibliographic records.
- Some new codes have been defined for the 007/01 Electronic resources, 007/01 Projected graphic and 007/01 Microform to facilitate the encoding of all RDA carrier types.
- A new field 338 is provided in MARC Bibliographic and in MARC Holdings to record more specific carrier type/s in textual form ($a) and/or in two-character coded form ($b). In bibliographic records, it may be used as an alternative to or in addition to 007/01.
- A list of the terms and two-character codes for field 338 $a and $b, along with the corresponding 007/01 and other codes, is available at: Term and Code List for RDA Carrier Types. The source code for this list to be recorded in field 338 $2 (Source) is rdacarrier.
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Attributes of Entities (Names and Resources)
Attributes of names and titles have typically been recorded in name headings (e.g., date of birth) or in uniform title headings (e.g., key for music), or they may have been included in the Authority record for the name or title.
Attributes of Persons, Families and Corporate Bodies (RDA Section 3)
New fields have been established in MARC Authority to allow some attributes of persons, families and corporate bodies to be recorded separately from the heading or as part of the heading (or both).
- Dates associated with the person, family, or corporate body described in the MARC Authority record may be recorded in field 046 - Special Coded Dates.
- The town, city, province, state, and/or country associated with the person, family, corporate body, work or expression described in the MARC Authority record may be recorded in field 370 - Associated Place.
- The address where the person or corporate body described in the MARC Authority record can be found or contacted may be recorded in field 371 - Address.
- The field of endeavor or area of expertise in which the person or corporate body described in the MARC Authority record is or was engaged may be recorded in field 372 - Field of Activity.
- Information about a group with which the person described in the MARC Authority record is or has been affiliated may be recorded in field 373 - Affiliation. Dates of affiliation may also be recorded.
- Information about the profession or occupation in which the person described in the MARC Authority record works or has worked may be recorded in field 374 - Occupation. Dates of work in the profession or occupation may also be recorded.
- Information about the gender of the person described in the MARC Authority record may be recorded in field 375 - Gender. Dates of identification with a specified gender may also be recorded.
- Information about the family described in the MARC Authority record may be recorded in field 376 - Family Information. This may include type of family, the name of a prominent member of the family, and hereditary title.
- The MARC language code identifying the language that the person or corporate body described in the MARC Authority record uses for publication, communication, etc, may be recorded in field 377 - Associated Language.
New fields have been established in MARC Bibliographic and MARC Authority to allow some attributes of works and expressions to be recorded separately from the heading or as part of the heading (or both).
- Dates associated with the work or expression described in the MARC Authority record may be recorded in field 046 - Special Coded Dates.
- The form of communication through which the work described is expressed and the human sense through which it is intended to be perceived may be recorded in field 336 in MARC Bibliographic records and in MARC Authority records
- The class or genre to which a work belongs may be recorded in field 380 in MARC Bibliographic records and in MARC Authority records.
- Any characteristic that serves to characterize a work or expression but is not accommodated in a special field may be recorded in field 381 in MARC Bibliographic records and in MARC Authority records.
- The instrumental, vocal, and/or other medium of performance for which a musical work was originally conceived or for which a musical expression is written or performed may be recorded in field 382 in MARC Bibliographic records and in MARC Authority records.
- A serial number, opus number, or thematic index number assigned to a musical work by the composer, publisher, or a musicologist may be recorded in field 383 in MARC Bibliographic records and in MARC Authority records.
- The set of pitch relationships that establishes a single pitch class as a tonal centre for a musical work or expression may be recorded in field 384 in MARC Bibliographic records and in MARC Authority records.
Relationships to Persons, Families, and Corporate Bodies associated with a resource (RDA Section 6)
- A relationship designator may be included when recording relationships between a resource and persons, families and corporate bodies associated with that resource, in order to make the nature of the relationship clear.
- These types of relationships may already be recorded using relator terms ($e) or codes ($4) in 1XX, 6XX, 7XX, and 8XX in MARC Bibliographic and 1XX, 4XX, and 5XX in MARC Authority.
- A list of possible relationships between a work, expression, manifestation or item and persons, families and corporate bodies is given in RDA Appendix I, e.g. author, editor, printer, former owner.
- The MARC Relator Code list will be augmented with RDA relationships that are not already in the list when the RDA list is final and available.
The relationship between a work, expression, manifestation, or item and a related work, expression, manifestation, or item may be recorded, if considered important.
- RDA identifies several methods for recording these relationships; identifiers, notes, structured descriptions, and structured access points.
- identifiers may be recorded in many $o, $u, $x, $w, and $0 subfields, and field 856
- notes may be recorded in 5XX MARC Bibliographic and 6XX MARC Authority
- structured descriptions may be recorded in 76X-78X MARC Bibliographic
- structured access points may be recorded in 7XX MARC Bibliographic and 4XX and 5XX MARC Authority
- The Relationship information $i subfield has been added to MARC Bibliographic 7XX to specify these types of relationships, and redefined in Bibliographic 76X-78X and MARC Authority 4XX and 5XX.
- A list of over 400 relationships that may exist between works, expressions, manifestations and items is given in RDA Appendix J, e.g. preceded by, review of, bound with.
The relationship between a person, family, or corporate body and a related person, family, or corporate body may be recorded, if considered important.
- The Relationship information $i subfield has been redefined in MARC Authority 4XX and 5XX to specify these types of relationships.
- A list of possible relationships between persons, families and corporate bodies is given in RDA Appendix K, e.g. alternate identity, predecessor.
- Other changes to MARC Bibliographic
The ISSN $x subfield in field 490 - Series Statement has been made repeatable to accommodate the ISSN for both the series and the subseries when they both appear in a resource.
Describing carriers and Describing content (RDA Section 1, Chapter 3 and Chapter 7)
Some new codes have been defined for the 007/01 Non-projected graphic, 007/04 Map, 007/04 Globe, 007/04 Non-projected graphic, and 008/20 Music to facilitate the encoding of other information about content and carriers, such as format, extent, and base material.
Dissertation or thesis information (RDA Section 2, Chapter 7.9)
Additional subfields have been defined in field 502 - Dissertation Note to provide greater granularity and to support parsing of specific data elements relating to a dissertation.
Place and date of capture (RDA Section 2, Chapter 7.11)
Additional subfields have been added in field 033 - Date/Time and Place of an Event and field 518 - Date/Time and Place of an Event Note to provide greater granularity and to support parsing of specific data elements relating to place and date of capture.
Encoding URIs for controlled values and headings
Experimentation with a technique for including URIs for controlled values and headings will be undertaken within the existing MARC format. For further information see MARC Discussion Paper No. 2010-DP02.
Indicating the use of RDA rules and ISBD punctuation
The Description conventions $e subfield in Field 040 has been made repeatable and code "rda" added to the MARC code list for Descriptive Conventions to indicate the use of the RDA rules for description.
Leader/18 will be coded "i" or "c" to indicate the presence or absence of ISBD punctuation at subfield boundaries.