An ontology is a formal representation of a set of concepts within a domain and the relationships between those concepts. Ontologies are the main kind of resource used for the Semantic Web or knowledge management as a knowledge representation. The concepts are linked together by hierarchical relationships in one hand and semantic relationships in another hand (See: Athenawiki - Definitions).

Explore further the Linked Heritage learning object: Terminology.

See also: Semantic Web, Terminology, Web Ontology Language (OWL)

The Open Archives Initiative Protocol for Metadata Harvesting, commonly referred to as OAI-PMH or OAI protocol, is a protocol defined by the Open Archive Initiative. It provides a method for data providers to make records for their items (as a means of exposing metadata) available for harvesting by service providers that operate through a harvester.

Explore further the Linked Heritage learning object: MINT Services.

See also: Harvesting, MINT

See: Web Ontology Language (OWL)