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  2. Explanatory Notes to the List of JPCOAR Schema Terms

Subject

Element

jpcoar:subject
Usage:
MA (Mandatory when applicable)
Occurrence:
0-N (Repeatable: expect mandatory term)

Attribute

subjectScheme
Usage:
M (Mandatory)
Occurrence:
1 (Non-repeatable: mandatory term)
Controlled Vocabularies
  • BSH
    -
    Basic Subject Headings
  • DDC
    -
    Dewey Decimal Classification
  • e-Rad_field
    -
    Research field (main) in The Cross-Ministerial R&D Management System (e-Rad)
  • JEL
    -
    JEL (Journal of Economic Literature) Classification Codes
  • LCC
    -
    Library of Congress Classification
  • LCSH
    -
    Library of Congress Subject Headings
  • MeSH
    -
    Medical Subject Headings
  • NDC
    -
    Nippon Decimal Classification
  • NDLC
    -
    National Diet Library Classification
  • NDLSH
    -
    National Diet Library Subject Headings
  • SciVal
    -
    Elsevier SciVal Subject Classification
  • UDC
    -
    Universal Decimal Classification
  • Other
    -
subjectURI
Usage:
MA (Mandatory when applicable)
Occurrence:
0-1 (Non-repeatable: except mandatory term)
xml:lang
Usage:
MA (Mandatory when applicable)
Occurrence:
0-1 (Non-repeatable: except mandatory term)

Usage Instructions

  • Enter the subjects and classifications describing the database.
  • For classifications, enter the codes only. For 'subjectScheme', use the controlled vocabularies.
  • For 'subjectURI', enter the value of ID in a HTTP URI format. If there is no URI, do not specify 'subjectURI' (e.g., https://id.ndl.go.jp/auth/ndlsh/00575529).

Notes

  • Do not enter the term names of the classifications.
  • There is no limit to the number of occurrences of jpcoar:subject for each language code and it may be entered multiple times repeatedly.

Recommended Examples

  • Examples of categories in Japan Search
 <jpcoar:subject subjectScheme="Other">書籍等</jpcoar:subject>
  • Examples of classification codes
 <jpcoar:subject subjectScheme="NDC">007</jpcoar:subject>
  • Example of subjects
 <jpcoar:subject xml:lang="ja" subjectScheme="NDLSH" subjectURI="https://id.ndl.go.jp/auth/ndlsh/01009109">社会情報学</jpcoar:subject>