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<compound-subject-part> Compound Subject Part Name

Individual component of a multi-part subject (for example, subject term, code for the term).

Usage/Remarks

Subjects are used, typically, in searching and discovery or to provide headings for groups of book parts in a printed or online generated Table of Contents. This element can name one of the components of a subject when that subject is a multi-part subject rather than a simple subject.

Best Practice

The @content-type attribute should be used to indicate the type of the various subject parts, for example, “text”, “code”, “sponsor”, “taxonomy number”, etc.
Related Elements
A <compound-subject-part> may be used if a subject has multiple parts, but need not be used unless both parts need to be captured:
  • If a subject is only a word or phrase (Neuroscience, Physical Sciences), the simple <subject> element can be used to capture this information (<subject>Neuroscience</subject> or <subject>Physical Sciences</subject>).
  • If a subject contains both a term and a code (A11 Permeability) but only one of those objects needs to be captured, a <subject> element may still be used, to record either the code (<subject>A11</subject>) or the subject (<subject>Permeability</subject>). If such a compound subject is considered to be a single subject, the <subject> element may also be used: <subject>A11 Permeability</subject>.
  • If a subject contains both a term and a code, and it is useful to record both the code and the term separately, each can be captured as a <compound-subject-part>s inside a <compound-subject>. (See tagged examples below.)
Attributes
content-type

Base Attributes

id
xml:base
Models and Context
May be contained in
<compound-subject>
Description
Any combination of:
Content Model
<!ELEMENT  compound-subject-part
                        (#PCDATA %compound-subject-part-elements;)*  >
Expanded Content Model

(#PCDATA | bold | fixed-case | italic | monospace | overline | overline-start | overline-end | roman | sans-serif | sc | serif | strike | underline | underline-start | underline-end | ruby | alternatives | inline-graphic | inline-media | private-char | chem-struct | inline-formula | named-content | styled-content | sub | sup)*

Tagged Samples
Codes and their expansions 
...
<book-part-meta>
 <subj-group>
  <compound-subject>
   <compound-subject-part
     content-type="code">A1</compound-subject-part>
   <compound-subject-part
     content-type="text">Cellular and Molecular Biology
   </compound-subject-part>
  </compound-subject>
  <subj-group>
   <compound-subject>
    <compound-subject-part
      content-type="code">A11</compound-subject-part>
    <compound-subject-part
      content-type="text">Blood&ndash;brain
     barrier</compound-subject-part>
   </compound-subject>
   <subj-group>
    <compound-subject>
     <compound-subject-part
       content-type="code">A115</compound-subject-part>
     <compound-subject-part
       content-type="text">Permiability
     </compound-subject-part>
    </compound-subject>
   </subj-group>
  </subj-group>
 </subj-group>
 <title-group>...</title-group>
 <contrib-group>...</contrib-group>
 ...
</book-part-meta>
...
With @content-type attribute 
...
<book-part-meta>
 <subj-group subj-group-type="flesch-subject-headings">
  <compound-subject>
   <compound-subject-part
     content-type="flesch-code2">A2</compound-subject-part>
   <compound-subject-part
     content-type="flesch-short-form">Neurobiology
   </compound-subject-part>
  </compound-subject>
 </subj-group>
 <title-group>...</title-group>
 <contrib-group>...</contrib-group>
 ...
</book-part-meta>
...
IPC codes with @vocab attribute 
...
<subj-group vocab="ipc">
 <compound-subject>
  <compound-subject-part content-type="code"
     >B82B1/00</compound-subject-part>
  <compound-subject-part content-type="value"
     >Nano structures</compound-subject-part>
 </compound-subject>

 <compound-subject>
  <compound-subject-part content-type="code"
    >H01L21/02</compound-subject-part>
  <compound-subject-part content-type="value"
    >Manufacture or treatment of semiconductor
     devices or of parts thereof</compound-subject-part>
 </compound-subject>
</subj-group>
...