This is what we suggest to our clients: Mapping for OPAC display sometimes needs to be adjusted locally. Some mapping supplied by vendors has problems.
Following are fields to check for. Unless otherwise noted, map to the named OPAC field given beside the field number. Where no subfields are given, map all. There are no standards for these labels, so the names in software systems vary. Some software will allow you to change the names. A strong case can be made for suppressing the labels, and displaying the bibliographic information in ISBD order with ISBD punctuation, like the unit catalogue card. This creates more space for bibliographic information. The labels are often misleading. A 100 labeled Author may be a composer, or a criminal defendant, for example. A 700 labeled Added author may be a translator, an illustrator, and editor, or even a Festschrift honouree. Fields which are not mapped may simply be left in the record. The only fields which should be deleted are those which apply to a particular copy in a record acquired from an individual library's catalogue. *means the field is indexed 001 Record sequence number* This is a local field supplied by your software. The previous 001 may be moved to 035. 035 is usually not mapped nor indexed. 010 LCCN* 020 ISBN* 022 ISSN* Many do not map 050/055/060/082, unless one is used as the local call number rather than 090 (or OCLC's 092). Some map them to "Knowledge numbers" or indexes named for the classification system, for class searching. This can be very useful. 050 LCC 055 LCC assigned in Canada, or Canadian class number used with LCC 060 NLM classification 082 DDC 090$a Local call number* This field varies; some libraries use a different 09X, or a number in the 8XX or 9XX range. Some libraries use the 050/055/060/082 fields if present rather than entering an 09X. Cf, 852 $h$i. 090$b Location $f Sublocation. Primarily in Canada. Field and subfield vary with system. Cf. 852$a$b. 090$c Copies $d Volumes Primarily in Canada. Field and subfields vary with system. Usually mapped to "Holdings"; At SLC $c has print constant "c." unless there is text other than numbers; $d has print constant "v." unless there is text or a four digit number (year). Cf. 852$t$i. Normally there is one 090 per title, but one 852 per physical item. 100 Personal author* 110 Corporate author* 111 Conference* 100, 110, and 111 are usually combined in a "Author" search, along with 700, 710, 711, 800, 810, and 811. 130 Uniform title* (as main entry) 240 Uniform title* (as filing title after 1XX), Indexing 240 as title will result in many unneeded index entries, e.g., "Works", But distinctive uniform titles are needed, e.g., "Romeo and Juliet". There is no indicator to distinguish form from distinctive uniform titles. 245 Title $a Title proper* $h[general material designation] $b subtitle or parallel title $n number $p Part Map to "Title". While 245$a$h$b$h$n$p are mapped to display as "Title", it's best to index only 245$a to determine the order of hitlists. If the other subfields are included, the title proper may display far down the hitlist from where expected by patrons. Some libraries which index the whole string have found it necessary to enter a 246 for the title proper alone, when there is a subtitle or parallel title. If RDA/MARC21 fields 336 and 338, content and carrier, are displayed elsewhere than following 245$a, 245$h should be displayed in that same location. ISBD has content and carrier in Area 0, advocating early display. 245$c Statement of responsibility. It should be included in the keyword search, in part because of differences in spellings of names between statements of responsibility and entries. 246 Alternate title* When 1st indicator is 1, good systems display a note and vary the name of this field based on the 246 2nd indicator: 4 = Cover title, 5 = Added title page title, 6 = Caption title, 7 = Running title, 8 = Spine title. Other sources of title are recorded in $i (to be printed in the note) before the title in $a, with 1st indicator 1. The 246 should be indexed by the title search along with 130, 240, 245, 730, and 740. Many libraries include 505$t, 7XX$t, 8XX$t, 780$t, 785$t, 440, 830, and 840 in the title search. 247 Previous title.* May be found in older records for serials entered under most recent title. Used in current records for loose-leaf services and websites which have changed title. Map to "Title". 250 $a Edition $b Statement of responsibility for edition. Include in keyword search. [Between 250 and 260 there are some media specific fields: 254 music, 255 maps, 256 computer files; if you have those media, those fields should be mapped to "Media specific information". See also 362.] 260$a Place $b Publisher $c Date $e Place $f Manufacturer $g Date Some map these to different named fields, others to one called "Publishing information" or "Imprint". Beginning September 1, 2002, it became possible to have multiple imprints, with original publisher having 1st indicator blank, intermediate publisher having first indicator 2, and current or last publisher having 1st indicator 3. Subfield $3 (entered before $a) gives the dates covered by that imprint. Since this does not reflect AACR2 practice (it was considered and rejected), it does not seem to be being applied. First publisher of serials is in 260$b, later ones in 500. Current publisher of an integrating resource is in 260$b, earlier ones in 500. 300 Collation $a Extent and smd $b Illustration, etc. $c Size $e Accompanying material Since 300$a may contain pagings, volumes, or other extent, as well as specific material designation, it is probably best not to break this field up with labels for its parts. 336-338 Content, Media type, and Media Carrier These three RDA/MARC fields replace 245$h general material designation, and [338 : 336] may be displayed as such, to have consistent AACR2/RDA display. If 336 and 338 are displayed elsewhere, 245$h should be mapped to the same display area. 336 Content* May be mapped to display after 245$a as "[<carrier term> : <content term>]", or at head of all data; [volume : text' need not be displayed. If more than one term, separate by commas. Field 336 could be included in a genre index with 338, 245$h, 655, and 6XX$v, but it is not important. Some terms, e.g., "text" would be useless. 337 Media type Need not be displayed 338 Carrier* May ve displayed after 245$a as "[carrier term>" : <content term>]", or at head of all other data' [volume : text] need not be displayed. If more than one term, separate by commas. Carier term in 338 may be indexed in a genre index along wtih 336, 655, 245$h, and 6XX$v. Some terms, e.g., "volume" would be useless. 362 Serial numbering/dates May be displayed between 25X and 260, or as first note. 400 Obsolete series under author. Map as 490/800. 410 obsolete corporate series entry. Map as 490/810. 440 $a Series* $v numbering. Field 440 is now obsolete. Where present in older records, it should be mapped and indexed as 490/830. 490 $a Series statement $v numbering. Some libraries do index 490 0 (not traced), but not 490 1 (traced in 8XX) because the 490 form would duplicate the 830 tracing, or possibly a cross reference to it. All 490s should be mapped to display after 300 collation. See also 830. All 5XX fields may simply be mapped to "Notes". Some prefer to break out some notes with their own labels as follows. The list is not exhaustive. Those marked "+" are more likely to be separately mapped. All 5XX should be included in keyword search. 500 Note 501 With+ 502 Thesis note 503 Bibliographic history (not in current records) 505 Contents+ Some newer enhanced 505 contents notes have subfields, e.g., $t for title, which could be mapped to the title index; the $t would need to be after any initial article for this to be effective. Some systems follow the 1st indicator for a print constant: 0 = Contents, 1 = Incomplete contents, 2 = Partial contents. 506 Restrictions on access Some restrictions also in 540. 507 Map scale 508 Production notes 510 Indexing 511 Performers 515 Numbering peculiarities 518 Date, time and place of event 520 Summary+ 521 Target audience 525 How supplemented 530 Other physical forms 536 Funding information 538 Systems details+ Some map 538 to be first note. 546 Language of text 550 Issuing body 555 Cumulative index 580 Relation to other publications 588 Source of description All 6XX fields have a second indicator for the type of subject heading: 0 = LCSH, 1 = LC Children's, 2 = Mesh, 3 = NAL, 4 = Local, 5 = NLC, 6 = NLC French, 7 = Other (with source in $2), 8 = Local French, 9 = RVM. You should map only the one(s) you want, or if that can't be done, delete those you don't want. All subfields except $2 should be mapped, in the order in which they appear. In some OPAC software, the repeating field to be used for 6XX headings is called DESC or Descriptor rather than Subject. Not all these subfields appear in each 6XX, but if they must be individually listed, it is simplest to list all for each. Remember for 600, 610, and 611 you may have an author/title subject heading, so you may wish to also index $t and subsequent fields as subject titles. $a$q$b$c$d$e$t$k$u$f$l$m$n$o$p$r$s$g$h$x$z$y$v 600 Personal subject* 610 Corporate subject* 611 Conference subject* 630 Title subject* 650 Subject* 651 Geographic subject* 655 Genre heading* Still often mapped to Subject index, but intended for a possible future genre index, which might also include 245$h, 336, 338, and 6XX$v. 695 Key words in Catss Used by SLC for the titles of papers given at Canadian law symposia. Titles are in $a, and authors in $x. If wished, 695$a may be mapped to title index, and 695$x to author index. In most systems, 695, like unenhanced 505, would only be included in a keyword index which browses the entire record. All the subdivisions listed for 6XX except $v should also be mapped for 7XX. 700, 710, 711, 780, and 785. These may be author/title entries; you may wish to map $t in 700-711 and 800-811 fields to the title index as well. 700 Personal added author* Map to author index. Some map 700$t to title index. 710 Corporate added author* Map to author index. Some map 710$t to title index. 711 Conference added entry* Map to author index. Some map 711 $t to title index. 730 Uniform title* Map to title index. 740 Title added title* Used for related and analytical titles. Map to title index. 780$t Former title* If 1st indicator is 0, this should also produce a note based on 2nd indicator: 0 = Continues, 1 = Continues in part, 2 = Supersedes, 3 = Supersedes in part, 5 = Absorbed, 7 = Separated from. Map to title index. 785$t Succeeding title* If lst indicator is 0, this should also produce a note based on 2nd indicator: 0 = Continued by, 1 = Continued in part by, 2 = Superseded in part by, 4 = Absorbed by, 5 = Absorbed in part by, 8 = Changed back to. Map to title index. 8XX All 8XX should be mapped to the appropriate index(es) (800/810/811 to author, 8XX$t/830/840 to title), and/or a series index. None need be displayed except following 6XX and 7XX as "tracings" in a full record display. 800 Personal series tracing* $a Author $t Title $x ISSN $v number 810 Corporate series tracing* $a Corporate author $t Title $x ISSN $v number. 811 Conference series tracing* $a Conference author $t Title $x ISSN $v number. 830 Series title tracing* $a Title $x ISSN $v number 840 Series title tracing* $a Title $x ISSN $v number. Now obsolete and not in current records. 852 Holdings Normally there is one 852 per physical item. Most common subfields: $a Location $b Sublocation $h Classification $i Cutter, year, volume $k Call number prefix $m Call number suffix $p Bar code or accession number $t Copy number $u Local URL 852 $k$h$i$m may be combined as Call number* 856$u External URL for electronic resource. Displayed a live link at bottom of display. May contain other subfields, such as $z public note, displayed before $u. 9XX Local fields including entries in other languages. Usually not displayed.
