The Department of Defense Discovery Metadata Specification (DoD Discovery Metadata Specification or DDMS) is a Net-Centric Enterprise Services (NCES) metadata initiative. DDMS is loosely based on the Dublin Core vocabulary. DDMS defines discovery metadata elements for resources posted to community and organizational shared spaces. It is sometimes (incorrectly) referred to as DoD Discovery Metadata Standard. The project focuses both on the process of developing a central taxonomy for metadata, and defining a way of discovering resources by their metadata using that taxonomy.
The DDMS was created in support of the DoD Net-Centric Data Strategy (dated May 9, 2003), and specifies a set of information fields that are to be used to describe any data or service asset that is made known to the DoD Enterprise. The elements in the DDMS are designed to be platform, language, and implementation-independent, and the specification is described with an XML Schema.
Read more about Department Of Defense Discovery Metadata Specification: Structure, Versioning, Related Specifications
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