XMI (XML Metadata Interchange) is an Object Management Group (OMG) standard that enables the interchange of metadata between software modeling tools and repositories. It uses XML as the serialization format to represent models defined using the Meta-Object Facility (MOF), making it possible to share, store, and transform models across different platforms and environments.
XMI is widely used in model-driven engineering (MDE), particularly in domains that rely on UML (Unified Modeling Language) and other MOF-based modeling languages. It supports the exchange of structural and behavioral models, including class diagrams, state machines, and activity diagrams, allowing teams to collaborate across different modeling tools such as IBM Rational Rhapsody, Sparx Systems Enterprise Architect, and Eclipse Modeling Framework (EMF).
- Enables interoperability between modeling tools and repositories
- Supports UML, MOF, and other OMG modeling standards
- Facilitates model versioning and integration with version control systems
- Used in embedded systems, aerospace, telecommunications, and enterprise architecture
- Integrates with model transformation frameworks like ATL and QVT
Professionals with XMI expertise are typically involved in systems engineering, software architecture, or model-driven development roles. They are expected to understand XML schema, MOF-based modeling, and tool-specific XMI export/import mechanisms. Knowledge of related standards such as CWM (Common Warehouse Metamodel) and SysML is often beneficial. As organizations adopt model-based systems engineering (MBSE), XMI remains a foundational technology for ensuring consistency and traceability across complex development lifecycles.