This work is licensed under the Creative Commons Attribution-ShareAlike License. To view a copy of this license, see the file license.txt, visit http://creativecommons.org/licenses/by-sa/2.0 or send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA. This component schema defintion defines global element declarations for each of the data elements defined in the LOMv1.0 base schema. This component schema definition is used to check for the uniqueness of elements declared to be unique within their parent elements by the presence of the "uniqueElementName" attribute. The XML Schema constraint "unique" is used to enforce uniqueness constraints. Duplicate declarations are included as comments for completeness. These declarations should remain commented out or they can be removed completely.