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This file represents a composite schema for validation of the following:
1) No validation of vocabularies values for those LOMv1.0 base
schema (i.e., 1484.12.1-2002) defined LOM data elements with a
Vocabulary data type.
2) Uniqueness constraints defined by LOMv1.0 base scheam
3) The use of XML element/attribute extensions to the LOMv1.0 base schema