What is the Dublin Core?
The so-called Dublin Core is a formal standard published in 1995 and is still considered one of the best vocabularies for specifying metadata. The full name is“Dublin Core Metadata Element Set.” The advantage of this vocabulary is that only 15 elements are used for the resource description of a document. The part“Dublin” in the name of the vocabulary comes from the place Dublin, located in the US state Ohio, where the first workshop for the development of the vocabulary took place in 1995.
How is metadata specified?
The Dublin Core vocabulary consists of only 15 so-called generic elements that are used to specify the metadata for content, intellectual property and instantiation in a web page. Elements of the Dublin Core are for example title, subject, description, language, creator or source. The elements are specified in the source code of a website. The order of the elements is arbitrary. In addition, it is possible to use each element more than once by defining it uniquely through further fields. Human-readable labels are added to indicate the use of the individual elements.
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