Metamodel Database (MDB)

• The Node/Relationship/Property structure of data models across a set of systems or repositories;
• Terms, i.e., controlled vocabulary, employed in the backend data systems that the models represent;
• Synonyms for vocabulary mapped between models or from external standards; and,
• Acceptable Value Sets of Terms for Properties having enumerated value domains, and data types for other properties.

• Auditing and maintenance of data model changes and updates;
• Storage of synonym mappings among entities and terminology from different models;
• Detailed searching across large models and sets of terminology;
• Exploration of model structure for QA of within- and between-model consistency and accuracy of vocabulary;
• Enabling automated transformation of data between different models via stored synonym, hierarchical, and other mappings;
• Providing a single resource for viewing and evaluating existing data models in a system, for model reuse or new model design.