690 Local Subject Added Entry--Topical Term (R)
Record Type |
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BIB, LBD |
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Input Standards |
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| Field (Full/Minimal) | ||
| Optional/Optional | ||
| 1st Indicator Level of subject | ||
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No information provided | |
| 0 | No level specified | |
| 1 | Primary | |
| 2 | Secondary | |
| 2nd Indicator Thesaurus | ||
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No information provided |
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| 0 | Library of Congress Subject Headings | |
| 1 | LC subject headings for children's literature | |
| 2 | Medical Subject Headings | |
| 3 | National Agricultural Library subject authority file | |
| 4 | Source not specified | |
| 5 | Canadian Subject Headings | |
| 6 | Répertoire de vedettes-matière | |
| 7 | Source specified in subfield ǂ2 | |
| Subfields (R=Repeatable NR=Nonrepeatable) | Input Standards (Full/Minimal) | |
| ǂa | Topical term or geographic name entry element (NR) | Mandatory/Mandatory |
| ǂb | Topical term following geographic name entry element (NR) | Required if applicable/Required if applicable |
| ǂc | Location of event (NR) | Required if applicable/Required if applicable |
| ǂd | Active dates (NR) | Required if applicable/Required if applicable |
| ǂe | Relator term (NR) | Optional/Optional |
| ǂg | Miscellaneous information (R) | Required if applicable/Required if applicable |
| ǂv | Form subdivision (R) | Required if applicable/Required if applicable |
| ǂx | General subdivision (R) | Required if applicable/Required if applicable |
| ǂy | Chronological subdivision (R) | Required if applicable/Required if applicable |
| ǂz | Geographic subdivision (R) | Required if applicable/Required if applicable |
| ǂ1 | Real World Object URI (R) | Optional/Optional |
| ǂ2 | Source of heading or term (NR) | Required if applicable/Required if applicable |
| ǂ3 | Materials specified (NR) | Optional/Optional |
| ǂ6 | Linkage (NR) | System supplied/System supplied |
| ǂ8 | Field link and sequence number (R) | Optional/Optional |
| ǂ9 | Special entry (NR) | Optional/Optional |
Definition |
A topical subject used as a local subject access point. Field 690 is used for locally created access points and for access points that do not follow standard guidelines. However, if the subject access point is of value to others, then use field 653. Field 690 is not retained in the WorldCat record. However, it is retained in exported records and records delivered via other services. For more information, see Subjects--General Information. |
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1st Indicator |
Level of subject. For information about the 1st indicator position, see Subjects--General Information. |
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2nd Indicator |
Thesaurus. For information about the 2nd indicator position, see Subjects--General Information. |
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Subfields |
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| ǂa Topical term or geographic name entry element | For information about subfield ǂa, see Subjects--General Information. |
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| ǂb Topical term following geographic name entry element | For information about subfield ǂb, see Subjects--General Information. |
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| ǂc Location of event | For information about subfield ǂc, see Subjects--General Information. |
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| ǂd Active dates | For information about subfield ǂd, see Subjects--General Information. |
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| ǂe Relator term | For information about subfield ǂe, see Subjects--General Information. |
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| ǂg Miscellaneous information | For information about subfield ǂg, see Subjects--General Information. |
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| ǂv Form subdivision | For information about subfield ǂv, see Subjects--General Information. |
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| ǂx General subdivision | For information about subfield ǂx, see Subjects--General Information. |
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| ǂy Chronological subdivision | For information about subfield ǂy, see Subjects--General Information. |
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| ǂz Geographic subdivision | For information about subfield ǂz, see Subjects--General Information. |
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| ǂ1 Real World Object URI | For information about subfield ǂ1, see Control Subfields. |
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| ǂ2 Source of heading or term | For information about subfield ǂ2, see Subjects--General Information. |
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| ǂ3 Materials specified | For information about subfield ǂ3, see Control Subfields. |
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| ǂ6 Linkage | Data that link fields when non-Latin script is entered. This subfield is system supplied and does not appear in OCLC online displays. Do not manually add subfield ǂ6. For more information about subfield ǂ6, see Control Subfields. |
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| ǂ8 Field link and sequence number | For information about subfield ǂ8, see Control Subfields. |
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| ǂ9 Special entry | For information about subfield ǂ9, see Control Subfields. |
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Punctuation |
For information about punctuation, see Subjects--General Information. |
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Indexing |
Field 690 is not indexed. |
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MARC 21 |
Field 690 is OCLC-defined and therefore not included in MARC 21 Format for Bibliographic Data. |
This page last revised: August 20, 2021