Content, media, and carrier fields

Source: http://rdabasics.com/2012/09/10/content-media-and-carrier-fields/

A major change from AACR2 is the introduction of three MARC fields: content type, media type, and carrier type, which go in fields 336, 337, and 338, respectively. These replace the information that in AACR2 was contained in the general material designator (GMD), which went in the “$h” subfield of MARC field 245. The GMD was considered imprecise and will no longer be in use in RDA records. A description of the three new fields follows.

Content type (field 336) is “a categorization reflecting the fundamental form of communication in which the content is expressed and the human sense through which it is intended to be perceived” (RDA 6.9.1.1). Got that? It is most useful to look at the list of content type terms here: http://www.loc.gov/standards/valuelist/rdacontent.html. (The terms are also listed in the RDA Toolkit.) These include terms such as “performed music,” “spoken word,” “text,” and “two-dimensional moving image.” This is a closed list, and catalogers should not use terms that are not on the list.

Media type (field 337) is “a categorization reflecting the general type of intermediation device required to view, play, run, etc., the content of a resource” (RDA 3.2.1.1). (Note that content type is in chapter 6 of RDA because it describes expressions; media type is in chapter 3 because it describes manifestations.) Basically, media type tells you what you need to do to access the content of the resource. If you have only to cast your eyes upon it, it is “unmediated.” Otherwise, it may be “audio,” “computer,” “video,” etc. The list of 10 prescribed terms can be found here: http://www.loc.gov/standards/valuelist/rdamedia.html. Again, this is a closed list.

Carrier type (field 338) is “a categorization reflecting the format of the storage medium and housing of a carrier in combination with the type of intermediation device required to view, play, run, etc., the content of a resource” (RDA 3.3.1.1). Chris Oliver adds that “[c]arrier types are closely correlated with media types and can be considered as the next level of granularity for the media types” (53). For example, a resource with media type “audio” might have carrier type of “audio disc” or “audiocassette.” A resource with media type “video” might have carrier type “videocassette” or “videodisc.” The (long) list of possible carrier types can be found here: http://www.loc.gov/standards/valuelist/rdacarrier.html. Again, it’s a closed list.

All three fields are repeatable. For example, a CD may be able to be played in an audio device as well as a computer, so it might be given two media types: “audio” and “computer.”

The following are some examples of how these three fields will look for different resources.

A basic book would be coded in this way:
336 ## text $2 rdacontent
337 ## unmediated $2 rdamedia
338 ## volume $2 rdacarrier

The “$2” subfields are mandatory. A DVD would look like this:
336 ## two-dimensional moving image $2 rdacontent
337 ## video $2 rdamedia
338 ## videodisc $2 rdacarrier

An audiobook on CD would look like this:
336 ## spoken word $2 rdacontent
337 ## audio $2 rdamedia
338 ## audio disc $2 rdacarrier

And a Web site would look like this:
336 ## text $2 rdacontent
337 ## computer $2 rdamedia
338 ## online resource $2 rdacarrier

These fields are not display fields. Sirsi (or LMxAC) will have to design a way for the information contained in the 336-338 fields to map to a display in the OPAC. The display may be very similar to the GMD we have today and may thus mean a relatively small change for our users. However, the new fields may have important effects on the faceted searching (the “buttons”) provided by LMxAC, if these searches use information from the GMD. Information on content and carrier, etc., in the fixed fields will not change.

Daftar istilah dan kode untuk RDA Media Types, MARC Field 337

This list contains Resource Description and Access (RDA) terms and corresponding one-character lower case alphabetic codes for RDA Media types. These types can be recorded in MARC Bibliographic and Holdings records in textual form and/or in the one-character coded form in MARC field 337 (Media Type). They may also be recorded, sometimes in a more granular and sometimes in a more general form, with one-character codes in MARC 007/00 (Category of material), in most cases. In the following, the one-character codes and terms for field 337, subfields $b and $a, respectively, are listed along with the corresponding 007 codes.

The source code for this list in field 337 $2 (Source) is rdamedia.

RDA media terms -337 $a	MARC codes for RDA terms - 337 $b	MARC media codes - 007/00
audio	s	s - sound recording
computer	c	c - electronic resource
microform	h	h - microform
microscopic	p
projected	g	g - projected graphic m - motion picture
stereographic	e
unmediated	n	t - text k - non-projected graphic
video	v	v - videorecording
other	x	z - unspecified
unspecified	z	z - unspecified

Daftar istilah dan kode untuk RDA Carrier Type, MARC Field 338

This list contains Resource Description and Access (RDA) terms and corresponding two-character lower case alphabetic codes for RDA Carrier types. These types can be recorded in MARC Bibliographic and Holdings records in textual form and/or in the two-character coded form in MARC field 338 (Carrier Type). They may also be recorded, sometimes in a more granular and sometimes in a more general form, with one-character codes in the MARC 007/01 (Specific material designation) with a few exceptions (see tables). In the following, the two-character codes and terms for field 338 $b and $a, respectively, are listed along with the corresponding MARC 007 (or other) codes.

The source code for this list in field 338 $2 (Source) is rdacarrier.

Audio carriers

RDA carrier terms - 338 $a	MARC codes for RDA terms - 338 $b	MARC audio carrier codes - 007/01
audio cartridge	sg	g - 007/01 (Sound recording)
audio cylinder	se	e - 007/01 (Sound recording)
audio disc	sd	d - 007/01 (Sound recording)
sound track reel	si	i - 007/01 (Sound recording)
audio roll	sq	q - 007/01 (Sound recording)
audiocassette	ss	s - 007/01 (Sound recording)
audiotape reel	st	t - 007/01 (Sound recording)
other	sz	z - 007/01 (Sound recording)

Computer carriers

RDA carrier terms - 338 $a	MARC codes for RDA terms - 338 $b	MARC computer carrier codes - 007/01
computer card	ck	k - 007/01 (Electronic resource)
computer chip cartridge	cb	b - 007/01 (Electronic resource)
computer disc	cd	d - 007/01 (Electronic resource)
computer disc cartridge	ce	e - 007/01 (Electronic resource)
computer tape cartridge	ca	a - 007/01 (Electronic resource)
computer tape cassette	cf	f - 007/01 (Electronic resource)
computer tape reel	ch	h - 007/01 (Electronic resource)
online resource	cr	r - 007/01 (Electronic resource)
other	cz	z - 007/01 (Electronic resource)

Microform carriers

RDA carrier terms - 338 $a	MARC codes for RDA terms - 338 $b	MARC microform carrier codes - 007/01
aperture card	ha	a - 007/01 (Microform)
microfiche	he	e - 007/01 (Microform)
microfiche cassette	hf	f - 007/01 (Microform)
microfilm cartridge	hb	b - 007/01 (Microform)
microfilm cassette	hc	c - 007/01 (Microform)
microfilm reel	hd	d - 007/01 (Microform)
microfilm roll	hj	j - 007/01 (Microfilm)
microfilm slip	hh	h - 007/01 (Microform)
microopaque	hg	g - 007/01 (Microform)
other	hz	z - 007/01 (Microform)

Microscopic carriers

RDA carrier terms - 338 $a	MARC codes for RDA terms - 338 $b	MARC microscopic carrier codes - Bibliographic 008/33
microscope slide	pp	p - 008/33 (Visual Materials)
other	pz	no code

Projected image carriers

RDA carrier terms - 338 $a	MARC codes for RDA terms - 338 $b	MARC projected image carrier codes - 007/01
film cartridge	mc	c - 007/01 (Motion picture)
film cassette	mf	f - 007/01 (Motion picture)
film reel	mr	r - 007/01 (Motion picture)
film roll	mo	o - 007/01 (Motion picture)
filmslip	gd	d - 007/01 (Projected graphic)
filmstrip	gf	f - 007/01 (Projected graphic)
filmstrip cartridge	gc	c - 007/01 (Projected graphic)
overhead transparency	gt	t - 007/01 (Projected graphic)
slide	gs	s - 007/01 (Projected graphic)
other	mz	z - 007/01 (Motion picture)  z - 007/01 (Projected graphic)

Stereographic carriers

RDA carrier terms - 338 $a	MARC codes for RDA terms - 338 $b	MARC stereographic carrier codes - 007/01
stereograph card	eh	h - 007/01 (Non-projected graphic)
stereograph disc	es	s - 007/01 (Projected graphic)
other	ez	no code

Unmediated carriers

RDA carrier terms - 338 $a	MARC codes for RDA terms - 338 $b	MARC unmediated carrier codes
card	no	no code
flipchart	nn	no code
roll	na	no code
sheet	nb	no code
volume	nc	no code
object	nr	r - Bibliographic Leader/06
other	nz	no code

Video carriers

RDA carrier terms - 338 $a	MARC codes for RDA terms - 338 $b	MARC video carrier codes - 007/01
video cartridge	vc	c - 007/01 (Videorecording)
videocassette	vf	f - 007/01 (Videorecording)
videodisc	vd	d - 007/01 (Videorecording)
videotape reel	vr	r - 007/01 (Videorecording)
other	vz	z - 007/01 (Videorecording)

Unspecified carriers

RDA carrier terms - 338 $a	MARC codes for RDA terms - 338 $b	MARC unspecified carrier codes - 007/01
unspecified	zu	u - 007/01 (Unspecified)

Daftar istilah dan kode untuk RDA Content Types, MARC Field 336

This list contains Resource Description and Access (RDA) terms and corresponding three-character lower case alphabetic codes for RDA Content types. These types can be recorded in MARC Bibliographic and Authority records in textual form and/or in the three-character coded form in MARC field 336 (Content Type). In MARC Bibliographic records, content types are also recorded, sometimes in a more granular and sometimes in a more general form, with one-character codes in the MARC Bibliographic Leader/06 (Type of material). In the following, the three-character codes and terms for field 336 $b and $a, respectively, are listed along with the corresponding Leader/06 codes.

The source code for this list in field 336 $2 (Source) is rdacontent.

RDA content term - 336 $a	MARC codes for RDA terms - 336 $b	MARC Bibliographic Leader/06 code(s)
cartographic dataset	crd	e or f
cartographic image	cri	e or f
cartographic moving image	crm	e or f
cartographic tactile image	crt	e or f
cartographic tactile three-dimensional form	crn	e or f
cartographic three-dimensional form	crf	e or f
computer dataset	cod	m
computer program	cop	m
notated movement	ntv	a or t
notated music	ntm	c or d
performed music	prm	j
sounds	snd	i
spoken word	spw	i
still image	sti	k
tactile image	tci	k
tactile notated music	tcm	c or d
tactile notated movement	tcn	a or t
tactile text	tct	a or t
tactile three-dimensional form	tcf	r
text	txt	a or t
three-dimensional form	tdf	r
three-dimensional moving image	tdm	g
two-dimensional moving image	tdi	g
other	xxx	o or p
unspecified	zzz