Universal Core is an XML-based information exchange specification and implementation profile which provides a framework for sharing the most commonly used data concepts of Who, What, When, and Where.
The purpose of UCore is to improve information sharing by defining and exchanging a small number of important, universally understandable concepts between data-sharing communities, without requiring complex mediations.
In this release, UCore is a set of reusable data components (RDCs) for the four interrogatives, an entity-to-entity relationship model, and supporting metadata types.
The released versions of UCore are expected to remain in place for as long as programs continue to use them, and may also support platforms that are somehow incompatible with NIEM.
[12] While no OPNAV Instruction related to UCore was issued, the Navy accepted a role as DoD lead and served as overall co-lead for the federal effort.
[14] The Universal Core Working Group chartered in April 2007 included DoD lead representative Daniel Green.
[15] UCORE-SL was an effort sponsored by the US Army Net-Centric Data Strategy Center of Excellence to augment the UCore Taxonomy with logical definitions for each term or relation defined within.