Interoperability Report released from EUscreen and Europeana
EUscreen has recently released a report on the interoperability between their digitised moving image collections and the umbrella project Europeana. The report gives a thorough explanation of the Open Archive Initiative Protocol for Metadata Harvesting (OAI-PMH) structure
which is the chosen technology for exporting metadata items to Europeana from EUscreen.
This type of data delivery architecture allows for Europeana to request and return metadata records of objects that may be stored and managed elsewhere on the internet, and is able to display the items in search results. An important feature within the architecture includes the validation of URLs within the metadata record upon loading the record. This is particularly important for audiovisual materials because the likelihood of these materials being hosted on different or separate servers is high, so link validation is vital to retrieving actual materials. The system also enriches the metadata records with a defined thesauri for multilingual terms, which pertains to the mission of Europeana as a portal for digital records in Europe.
The OAI-PMH database that is created in the Europeana architecture also includes SHA-1 hashtags, which provides a mechanism for creating unique digital identifiers for metadata records. The hashtags also serve as a mechanism for identifying duplicate files within the system. Records within the database are published to a user through an RSS feed that is built on top of the data architecture, allowing for new search results to be easily refreshed and pushed to the researcher.
This report serves as a functioning example of an information system pushing and pulling metadata records for audiovisual content. The report includes a mapping table in Section 3 that crosswalks the EUscreen Elements and matches them up with the Europeana Semantic Elements (ESE).
You can read the report here.