{
  "id": "ddc",
  "name": "Dewey Decimal Classification (DDC) number",
  "status": "draft",
  "doc": "Class number of the Dewey Decimal Classification, the library classification maintained by OCLC and used by public and school libraries and by national bibliographies in many countries. A number has three digits for the main class, division and section, such as 700 for the arts, and an optional decimal part for narrower subjects, such as 791.4. Numbers from the auxiliary tables are written with the table number and two hyphens, such as 2--4897 for Finland in Table 2 (geographic areas). The regexp is the Wikidata format of property P1036; it does not accept the letters and Cutter numbers of a full call number.",
  "categories": [
    {
      "id": "publishing",
      "name": "Publishing and print"
    }
  ],
  "langs": [
    {
      "id": "common",
      "name": "Common to most languages"
    }
  ],
  "is_pii": false,
  "classification": "categorical",
  "regexp": "^(?:\\d{3}(?:\\.\\d+)?|[12456]--\\d+|3[ABC]?--\\d+)$",
  "examples": [
    {
      "value": "700",
      "description": "The arts"
    },
    {
      "value": "791.4",
      "description": "Radio (Wikidata example)"
    },
    {
      "value": "2--4897",
      "description": "Finland, Table 2 notation"
    },
    {
      "value": "79",
      "valid": false,
      "description": "Fewer than three digits"
    }
  ],
  "mappings": {
    "wikidata": "P1036"
  },
  "links": [
    {
      "type": "wikipedia",
      "url": "https://en.wikipedia.org/wiki/Dewey_Decimal_Classification"
    },
    {
      "type": "wikidata",
      "url": "https://www.wikidata.org/wiki/Property:P1036"
    },
    {
      "type": "doc",
      "url": "https://www.oclc.org/en/dewey.html"
    }
  ],
  "translations": {
    "ru": {
      "name": "Индекс Десятичной классификации Дьюи (ДКД)",
      "doc": "Классификационный индекс библиотечной классификации Дьюи: три цифры класса и, при необходимости, десятичная часть."
    }
  },
  "type": "datatype",
  "wikidata_property": "P1036"
}