Summary: A basic overview of RDA record elements and acceptable hybrid practices, for catalogers upgrading or deriving from AACR2 copy. When upgrading or deriving records for non-print formats, some considerations not listed here will apply (see Nonbook materials procedures for additional guidance).Anchor top top
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Full RDA records
Remember that upgrading an AACR2 record essentially means re-cataloging the piece in the hand. Use this guide to revise the record and bring it into RDA compliance.
MARC field | Remove/replace | Add/check | Notes |
|---|---|---|---|
| Desc (fixed field) | a | i | indicates record was created under RDA rules |
| DtSt & dates (fixed fields) | t | only necessary if new record has both publication and copyright date otherwise, retain existing coding | |
| 040 | $b eng $e rda | $b eng may already be present | |
| 1XX | $e [relationship designator] | consult RDA Appendix I or J | |
| 245 | $h [GMD] | no longer valid in our catalog or OCLC | |
| [sic], [i.e.], [et al.] | remove Latin abbreviations; instead, title and statement of responsibility should be transcribed from exactly from source of information | ||
| 250 | edition statement | if present, ensure edition statement is transcribed exactly from source of information | |
| 260 | AACR2 publication statement | replace with 264 _1 | |
| 264 _1 | RDA publication statement | use instead of 260 | |
| [s.l.], [s.n.] | replace Latin abbreviations with [place of publication not identified], etc. | ||
| 264 _4 | $c ©yyyy | add copyright date if present | |
| 300 | vol, p., ill, etc. | volumes, pages, illustrations, etc. | replace Latin abbreviations with spelled out terms |
336 | content, media, and carrier | add appropriate RDA terms in these fields (an OCLC macro is available that will input the correct terms automatically) | |
| 490 | series information | if present, ensure series title is transcribed exactly from source of information | |
| 7XX | $e [relationship designator] | consult RDA Appendix I or J |
| Note |
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In some cases, square brackets that were needed under AACR2 may need to be removed in an RDA record. Generally speaking, most core, manifestation-level elements only need to be bracketed if the information is taken from a source outside the resource itself. See RDA 2.2.4 for more details |
Hybrid records
AACR2/RDA hybrid records are less common now (as of 2018) than they were when RDA was first implemented in 2013. However, catalogers will still periodically work with hybrid records if : they are
creating thesis, preservation photocopy, or EBM records with a structured 533 field (not valid in a full RDA record)the only copy available, or if they wish to add some RDA elements to an existing AACR2 copy record without performing a full upgrade
the only available copy is a hybrid record.
Use this guide to determine what elements are acceptable in a hybrid record, per the PCC's guidelines.
| MARC field & content | Acceptable in hybrid record? | Notes |
|---|---|---|
| Desc (fixed field) = a |  | hybrid records remain under AACR2 rule coding |
| Desc (fixed field) = i |  | the i code is reserved for fully RDA-compliant records |
| 040 $e rda | | should only be present in fully RDA-compliant records |
| 1XX $e relationship designators | | |
| 245 [sic], [i.e.], etc. | | |
| 245 $h [GMD] | | no longer valid in our catalog or OCLC replace with 33X content, media, and carrier fields |
| 245 $c [et al.] | | |
| 245 $c more than 3 authors listed | | AACR2's "Rule of Three" instructed catalogers to omit author names past the first three listed, and use [et al.] RDA permits full transcription of all author names on the source of information, a practice which is also acceptable in hybrid records |
260 (alone) | | |
| 260 [s.l.], [s.n.], etc. | | |
| 260 + 264 _4 (copyright) | | |
| 264 _1 (alone) | | |
| 264 _1 + 264 _4 (copyright) | | |
| 260 + 264 _1 | | these two fields serve the same function – delete the 260 |
| 300 p., ill., etc. | | |
| 300 pages, illustrations, etc. | | |
| 336, 337, 338 | | all 3 must be present add appropriate RDA terms in these fields (an OCLC macro is available that will input the correct terms automatically) |
| 7XX $e relationship designators | | |
| 7XX $4 MARC relator codes | | these should always be changed to RDA relationship designators if possible, even in hybrid records |
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