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source-id Source Identifier
Identifier of a journal, book, conference proceedings, or other publication that is
(or contains) the target of the <related-object>.
Usage/Remarks
The @source-id attribute holds
an external
identifier assigned to a publication that is part of the description of a related
object (<related-object>). The contents of this
attribute should not be confused with the @id attribute, which holds an internal document identifier that can be used by software to perform a simple link inside
the document.
Used along with @source-id-type to identify the publication that is (or contains) the target of the <related-object> element. The @source-id might contain an ISBN as content, and the @source-id-type should indicate that this identifier is an ISBN.
Best Practice
For each source, document, and object, an identifier should be specified on the corresponding
attribute.
For any related-object link, the @source-id attribute points to the largest publishable unit, for example, an entire book. The
@document-id attribute points to a major component of the source, for example, a chapter, front
matter section (Preface), or back matter section (Appendix) of a book. Use the @object-id attribute to point to any item within the specified major document component, for
example, a section, figure, table, or reference within the chapter of the book.
Where the more specific attributes are populated, the less specific attributes should
also be populated. For example, if @object-id is specified, then both @document-id and @source-id should also be populated. If @source-id points to the intended target (an entire book), then neither @document-id nor @object-id should be specified.
The <related-object> element can also provide a name for the type of each identifier used, for example,
ISBN, ISSN, DOI, XMLID, URI, and so on. These go on @source-id-type, @document-id-type, and @object-id-type as appropriate.
OPTIONAL on element: <related-object>
| Value | Meaning |
|---|---|
| Text, numbers, or special characters | The identifier of the source for the largest publishable unit (such as an entire book or conference proceedings) pointed to by the <related-object> element. |
| Restriction | @source-id is an optional attribute; there is no default. |
Tagged Sample
External identifier for a book (<related-object>)
...
<related-object source-id="http://www.ncbi.nlm.nih.gov/entrez/
query.fcgi?cmd=Retrieve&dopt=Expanded&db=nlmcatalog&list_uids=1252893"
source-id-type="url" source-type="book">
<person-group person-group-type="editor">...</person-group>
<source>Disease and Mortality in Sub-Saharan Africa</source>
...
</related-object>
...