080 Universal Decimal Classification Number (R)
Record Type |
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BIB |
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Input Standards |
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| Field (Full/Minimal) | ||
| Optional/Optional | ||
| 1st Indicator Type of edition | ||
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No information provided | |
| 0 | Full | |
| 1 | Abridged | |
| 2nd Indicator Undefined | ||
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Undefined | |
| Subfields (R=Repeatable NR=Nonrepeatable) | Input Standards (Full/Minimal) | |
| ǂa | Universal Decimal Classification number (NR) | Mandatory/Mandatory |
| ǂb | Item number (NR) | Optional/Optional |
| ǂx | Common auxiliary subdivision (R) | Optional/Optional |
| ǂ0 | Authority record control number or standard number (R) | Optional/Optional |
| ǂ1 | Real World Object URI (R) | Optional/Optional |
| ǂ2 | Edition identifier (NR) | Required if applicable/Required if applicable |
| ǂ6 | Linkage (NR) | System supplied/System supplied |
| ǂ8 | Field link and sequence number (R) | Optional/Optional |
Definition |
Number taken from the Universal Decimal Classification (UDC) scheme. The Universal Decimal Classification was developed from the Dewey Decimal Classification (DDC) scheme beginning in 1895. Since then, the two systems have become very different in arrangement and philosophy. |
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Guidelines |
Repeat field 080 to record multiple UDC numbers assigned to an item. |
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| Multiple call numbers | Certain classification choices are recognized to be local decisions. Multiple call numbers in the same classification scheme in a WorldCat record may be appropriate under certain circumstances. For more information, see 050-099 Introduction to Call Numbers. |
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1st indicator |
Type of edition. Whether the class number is from the full or the abridged edition of the classification schedules. The actual edition number is contained in subfield ǂ2. |
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2nd Indicator |
Undefined. The 2nd indicator position is undefined and contains a blank.
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Subfields |
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| ǂa Universal Decimal Classification number | The UDC number.
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| ǂb Item number | The item number portion of the UDC number. An item number is a Cutter, date, term, etc., added to a UDC number to distinguish items assigned the same classification number.
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| ǂx Common auxiliary subdivision | The number that qualifies the concept represented by the main UDC number. A common auxiliary subdivision, such as for form (e.g., dictionaries) is attached to a main UDC number preceded or delimited by a facet indicator. Commonly used facet indicators are parentheses, brackets, apostrophes, and hyphens.
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| ǂ0 Authority record control number or standard number | For information about subfield ǂ0, see Control Subfields. |
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| ǂ1 Real World Object URI | For information about subfield ǂ1, see Control Subfields. |
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| ǂ2 Edition identifier | The edition number, date, or other textual designation of the UDC edition used to compose the classification number. |
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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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Indexing |
For indexing and searching information, see Searching WorldCat Indexes, field 080. |
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MARC 21 |
For more information, including content designator history, see MARC 21 Format for Bibliographic Data, field 080. |