...over the Internet. In addition to business processes, the original framework defined four layers of substantive dataspecifications, including standards for core data components, collaboration protocol agreements, messaging, and registries...
http://www.oasis-open.org/news/oasis-news-2007-01-16.php
...a hierarchic arrangement that helps align data values in the form with their counterparts in the database. Dataspecifications: As part of each field specification, the developer set a number of parameters, including type, size...
http://www.workthru.org/WhitePaperpdf.pdf