It used to be that complete information about a library's collection was contained in a library's catalog. That's not true anymore now that libraries have incorporated internet-delivered content from diverse providers. New categories of information about the collection are now needed to facilitate online access to online content. For example, OpenURL link-servers need to know how and when to make links into online databases.They need machine-readable coverage statements and normalized titles. And they need to be able to deal with information providers that seem to be constantly changing their products and services. The databases that contain this type of information have come to be known as Knowledgebases.

Openly Informatics has been developing and maintaining Knowledgebases for the five years of its existence, although we didn't know what to call them at the start. Openly now licenses Knowledgebase components to the very best Library Automation Vendors and e-Journal Aggregators in the world. They take Openly components and tightly integrate them into product offerings which deliver a variety of services, including A-Z lists, OpenURL linking services and information portals.

Openly Informatics currently offers two Knowlegebase components, the JournalSeek Linking Database, and its UHF Holdings Data Service. Together, these products contain linking information for over 90,000 serial publications from over 2700 publishers. Access to the combined Knowledgebase is included in OCLC's WorldCat Link Manager linking service.

UHF Holdings Data Service

The focus of the UHF Holdings Data Service is knowing when to make links. Users don't want to see links to databases that don't have what they want. To know what databases have what, we track over 1200 products from 93 information providers. Every month, we download current holdings tables and process them into a single XML format called UHF, for "universal holdings format". Coverage statements tare normalized to make them easy for machines to read; titles are normalized to make them easy to search. The XML tables, containing over a million holdings records, are then loaded by subscribers into a variety of products and systems.

The UHF XML schema is published and available for all to use. By taking advantage of the modularity of XML schemas, UHF makes it possible to include all the data that an information service chooses to provide, while at the same time making it simple to transform and load into a variety of relational and non-relational databases. XML's Unicode base makes it easy to handle international text


As of December 2006, Openly's UHF Data Service now covers 93 providers including: ACM Digital Library, American Institute of Physics, American Psychological Association, ATLA, Blackwell, BioOne, CSIS, CrossRef, Directory of Open Access Journals, East View Online Services, EBSCO Host, EBSCO EJS, Elsevier Science Direct, Emerald, ERIC, Factiva, Gale Group, H. W. Wilson, Hein Online, Highwire Press, IEEE, Ingenta, JSTOR, Lexis Nexis, Metapress, OCLC, Ovid, Project Muse, ProQuest, Springer, Swets, The NASA Astrophysics Data System, Wiley InterScience. For a complete list of covered products, see http://nj.oclc.org/uhf/coverage.html

To have your offering covered, or to help us improve coverage of your service, please contact us at nj-info@oclc.org

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