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MARC Classification fields and Instances
Red = Change needed
| Description | MARC Field and relevant subfields | Current handling when field is repeated | Required handling when field is repeated | Current handling when subfield in one field is repeated | Required handling when subfield in one field is repeated | Notes |
|---|---|---|---|---|---|---|
| LC | 050 $a (R) $b (NR) | Separate classification fields | Separate classification fields | One classification field | Separate classification fields, with 1st $a and its $b if present in first Instance field, and 2nd $a in second Instance field | |
| NLM | 060 $a (R) $b (NR) | Separate classification fields | Separate classification fields | One classification field | Separate classification fields, with 1st $a and its $b if present in first Instance field, and 2nd $a (and its $b, if it has one) in second Instance field | |
| UDC | 080 $a (NR) $b (NR) | Separate classification fields | Separate classification fields | n/a | n/a | Since $a is not repeatable within a field, no change is needed |
| Dewey | 082 $a (R) $b (NR) | Separate classification fields. If there is a slash in $a, remove it and close up the space | Separate classification fields. If there is a slash in $a, remove it and close up the space | One classification field | Separate classification fields, with 1st $a and its $b if present in first Instance field, and 2nd $a (and its $b, if it has one) in second Instance field | |
| Gov Doc | 086 $a (NR) $z (R) | Separate classification fields. If $a and $z both present in the same 086 field, split them into separate Instance fields | Separate classification fields. If $a and $z are both present in the same 086 field, split them into separate Instance fields | ??Separate classification fields | Separate classification fields. If $a and multiple $z's are both present in the same 086 field, split them all into separate Instance fields | No change is needed |
| Local LC | 090 $a (R) $b (R) | Separate classification fields | Separate classification fields | One classification field | Separate classification fields, with 1st $a and its $b if present in first Instance field, and 2nd $a (and its $b, if it has one) in second Instance field | |
| Local Dewey | 092 $a (R) $b (R) | n/a | n/a | n/a | n/a | Not included in the default MARC-to-Instance map |
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Based on the required handling above
| Description | MARC data | MARC example | Instance Classification field(s) |
|---|---|---|---|
| LC | 2 050s | 050 14 $aB3199.A33 $bP7613 2000a | B3199.A33 P7613 2000a |
| LC | 1 050 with 2 $a | 050 04 $aZ5853.M38 $bG37 1993 $aTA418.9.C6 | Z5853.M38 G37 1993 |
| NLM | 2 060s | 060 10 $aW1 $bME9616J v.69 1997 | W1 ME9616J v.69 1997 |
| NLM | 1 060 with 2 $a | 060 \0 $aW1 NE372F v.12 $aQU 95 S839 | W1 NE372F v.12 |
| UDC | 2 080s | 080 \\$a001.81 $bB67 | 001.81 B67 |
| Dewey | 2 082s | 082 04 $a300.723 $bHEA 082 04 $a338.7/6292/092 $bHEA $221 | 300.723 HEA 338.76292092 HEA |
| Dewey | 1 082 with 2 $a | 082 04 $a300.723 $bHEA $a338.7/6292/092 | 300.723 HEA |
| Gov Doc | 2 086s | 086 0\ $aD 210.6:M 56 086 0\ $aY 3.AT 7:6 M 56/ | D 210.6:M 56 Y 3.AT 7:6 M 56/ |
| Gov Doc | 1 086 with 2 $z | 086 0\ $aA 1.1: $zA 1.1/3:984 $zA 1.1/4:985 | A 1.1: A 1.1/3:984 A 1.1/4:985 |
| Local LC | 2 090s | 090 14 $aB3199.A33 $bP7613 2000a | B3199.A33 P7613 2000a |
| Local LC | 1 090 with 2 $a |
| 090 14 $aZ5853.M38 $bG37 1993 $aTA418.9.C6 | Z5853.M38 G37 1993 |
MARC Classification and Holdings/Items
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Based on the required handling above
| Description | MARC data | Sample MARC | Field mapping | Holdings/Item Call Number |
|---|---|---|---|---|
| LC | 2 050s | 050$a " " 050$b | ||
| LC | 1 050 with 2 $a | 050$a " " 050$b | ||
| NLM | 2 060s | 060$a " " 060$b | ||
| NLM | 1 060 with 2 $a | 060$a " " 060$b | ||
| UDC | 2 080s | 080$a " " 080$b | ||
| Dewey | 2 082s | 082$a " " 082$b | ||
| Dewey | 1 082 with 2 $a | 082$a " " 082$b | ||
| Gov Doc | 2 086s | 086$a | ||
| Gov Doc | 1 086 with 2 $z | 086$a | ||
| Local LC | 2 090s | 090$a " " 090$b | ||
| Local LC | 1 090 with 2 $a | 090$a " " 090$b | ||
| Local Dewey | 2 092 | 092$a " " 092$b | ||
| Local Dewey | 1 092 with 2 $a | 092$a " " 092$b |