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Figure 1: High-level Architecture
!high-level_architecture.png,alt="high level architecture diagram"! high level architecture diagramImage Added

The layers at the top of Figure 1 indicate how the service components of the system are organized. The Knowledge Management layer provides high-level, transformation and management services, utilizing the MDR and Model service components. They present ISO 11179 and UML specific APIs, respectively. The implementations of these services use a common set of CRUD (Create, Read, Update, Delete), Query, and Reasoning components that, in turn, utilize Eclipse Modeling Framework (EMF) and W3C Semantic Web (SW) technologies. XML Metadata Interchange (XMI) remains the primary import representation. However, we use the EMF platform as the primary technology for manipulating Meta-Object Facility (MOF) instance models. This allows us to utilize the robust tooling of the Eclipse platform for CRUD and some UML/MOF-oriented query and comparison operations.

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