What is PRISM?
The Publishing Requirements for Industry Standard Metadata
(PRISM) specification defines an XML metadata vocabulary
for managing, aggregating, post-processing, multi-purposing
and aggregating magazine, news, catalog, book, and mainstream
journal content. PRISM recommends the use of certain
existing standards, such as XML, RDF, the Dublin Core,
and various ISO specifications for locations, languages,
and date/time formats. In addition PRISM provides a
framework for the interchange and preservation of content
and metadata, a collection of elements to describe that
content, and a set of controlled vocabularies listing
the values for those elements.
Metadata is an exceedingly broad category of information
covering everything from an article's country of origin
to the fonts used in its layout. PRISM's scope is driven
by the needs of publishers to receive, track, and deliver
multi-part content. The focus is on additional uses
for the content, so metadata concerning the content's
appearance is outside PRISM's scope. PRISM focused on
- General-purpose description of resources as a whole
- Specification of a resource’s relationships to other
- Definition of intellectual property rights and permissions
- Expressing inline metadata (that is, markup within
the resource itself).
Today PRISM consists of two specifications. The PRISM
Specification, itself, provides definition for the overall
PRISM framework. A second specification, the PRISM Aggregator
DTD is a new standard format for publishers to use for
delivery of content to web sites and to aggregators
and syndicators. It is an XML DTD that provides a simple,
flexible model for transmitting content and PRISM metadata.