The worldwide renowned and recognized initiative, called Dublin Core (DC) is an important component of the OAI model: it is the semantic standard for data exchange among digital archives.
The DC standard is fit for creating the minimum consensus necessary for implementing data exchange between different sorts of archives, thus between data providers and service providers. In most cases, however, it is not suited for completely describing archive content and satisfying modeling and functional requisites of content providers.
In conformity with OAI recommendations, NDDA implemented the Dublin Core element set to be the standard for data exchange between archives. In order to adapt to domestic needs as closely as possible, we have extended and supplemented this standard.
Dublin Core supplemented with classes enables the creation of thorough and expert descriptions to audiovisual items, films, bibliographies, images and datasets.
It is the data provider’s duty to annotate his archive’s contents with meta-data complying with the above standard. The scope of expenditures for newly joining partners depends on the extent and quality of the information created beforehand, describing the contents stored in his archive in his registry.
NDDA supplies data providers with different applications for the conversion. The NDDA system – using the OAI servers provided free of charge - automatically collects (“harvests”) generated meta-data, constantly expanding and updating the range of available contents.
Owing to the international nature of the standard, the contents annotated with DC compliant meta-data become searchable not only for the NDDA search engine, but for other international search engines too – making Hungarian culture and contents in Hungarian recognisable and available on a larger scale.
