Encoding Dublin Core Metadata in HTML
The Dublin Core [DC1] is a small set of metadata elements for describing information resources. This document explains how these elements are expressed using the META and LINK tags of HTML [HTML4.0]. A sequence of metadata elements embedded in an HTML file is taken to be a description of that file. Examples illustrate conventions allowing interoperation with current software that indexes, displays, and manipulates metadata, such as [SWISH-E], [freeWAIS-sf2.0], [GLIMPSE], [HARVEST], [ISEARCH], etc., and the Perl [PERL] scripts in the appendix.
RFC2731 also introduces the use of the <link> tag for associating an element name prefix with its reference definition, much like XML Namespaces:
<link rel = "schema.DC" href = "http://purl.org/DC/elements/1.0/"> <link rel = "schema.Atom" href = "http://purl.org/atom/ns#"> <link rel = "Atom.edit" href = "http://example.org/entries/1.atom">
Note that HTML link @rel and meta @name attributes are case-insensitive.