HTML and CSS Reference
Listing 7-33. Dublin Core Metadata with identifier
HTML5 and CSS3 tutorials.
Dr. Leslie F. Sikos
The Dublin Core Metadata Initiative recommends three general rules for Dublin Core implementation:
Dublin Core properties should be provided as XML elements. Property values should be
the contents of those elements. Listing 7-34 shows an example.
Listing 7-34. Dublin Core Properties as XML Elements
<dc:title>Dublin Core in XML element format</dc:title>
All Dublin Core property names should be lowercase. Listing 7-35 shows an example.
Listing 7-35. Dublin Core Property Names in Lowercase
<dc:title>Dublin Core example</dc:title>
Multiple property values should be declared by repeating the XML element for that
property (see Listing 7-36).
Listing 7-36. Repeated XML Elements for Multiple Dublin Core Property Values
Qualified Dublin Core
Qualified Dublin Core makes more specific and advanced (meaningful) annotations possible than Simple Dublin
Core. Using Qualified Dublin Core metadata is similar to adding Simple Dublin Core, except that Qualified Dublin Core
properties can be not only from the set of the original 15 DC elements but also from additional elements or element
refinements defined by the DCMI Metadata Terms recommendation . Furthermore, all Qualified Dublin Core
property values might have an associated encoding scheme with a unique name listed as the Term name in the DCMI
Metadata Terms recommendation.