OpenURL knowledge base

An OpenURL knowledge base is an extensive database containing information about electronic resources such as electronic journals or ebooks and their availability and accessibility. Using the knowledge base, an OpenURL link resolver can determine if an item (article, book etc.) is available electronically and what the appropriate copy for a user is.

The knowledge base helps a library to identify the content they have access to and present it to the users for access. Vendor-maintained knowledge bases seek to offer comprehensive coverage of items that are available to a wider community. As not every institution has access to all content under their individual license agreements the knowledge bases usually offer customization tools to localize its content. Individual institutions can then modify a knowledge base to reflect their local collections, for example, which titles can be accessed electronically by their users; which website provides access to their users; and which resources are owned by the library in print format.

Information stored include metadata describing individual journals and books, serials title lists available from specific platforms, what years are in the subscription (also called coverage dates) for each title and platform and inbound hyperlink syntax.

The knowledge base is essential in directing the user from a citation to available full text or other services. The link resolver extracts information received in an OpenURL and uses the knowledge base to augment and correct the data and to find services available to this user for this item. If it is available, the knowledge base provides the link resolver with the data needed to create a link to the desired item, ideally to the electronic full text.

OpenURL knowledge bases often have a close relationship with electronic resource management systems (ERMS) as both the link resolver and the ERMS essentially use the same core metadata.

In order for OpenURL linking to be successful in directing users to full text and other services; two components are required. Firstly the OpenURL query must direct the user to the appropriate level of access (be that the article; issue or journal title level for example) using the link server base URL appropriate to the user’s institution. Secondly the knowledge base that is queried by the link resolver must reference the appropriate copy of the full text service for that user based on active subscription that their parent institution might hold. This requires the knowledge base to be accurate; up to date; and comprehensive and much time is expended by libraries and link resolver vendors in ensuring the knowledge base satisfies this goal. Both of the above components must be accurate in order to allow end users to discover and access the electronic services they require. This in turn leads to more successful linking to full text which can increase content usage which benefits the whole supply chain for electronic content.

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Wikipedia