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Three Types of Model in MDA

publish date: 2026/06/08 21:08:33.515026 UTC

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The MDA method recommends that three types of abstract system model should be produced. Match each model type to its correct description.

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Model Type

Computation Independent Model (CIM)
Platform Independent Model (PIM)
Platform Specific Model (PSM)

Description

A transformation of the platform-independent model with a separate version for each application platform (e.g., J2EE, .NET); layers of PSM may exist, each adding more platform-specific detail
Models the important domain abstractions used in a system — sometimes called domain models; describes concepts such as patients, consultations, assets, and roles without implementation detail
Models the operation of the system without reference to its implementation; described using UML models showing static structure and responses to external and internal events

Correct Answer

(1) Computation Independent Model (CIM),Models the important domain abstractions used in a system — sometimes called domain models; describes concepts such as patients, consultations, assets, and roles without implementation detail
(2) Platform Independent Model (PIM),Models the operation of the system without reference to its implementation; described using UML models showing static structure and responses to external and internal events
(3) Platform Specific Model (PSM),A transformation of the platform-independent model with a separate version for each application platform (e.g., J2EE, .NET); layers of PSM may exist, each adding more platform-specific detail

Explanation

The three MDA model types: CIM (domain model — models domain abstractions, sometimes called a computation-independent model; there may be several CIMs reflecting different views); PIM (platform-independent model — models system operation without reference to implementation, using UML); PSM (platform-specific model — transformation of the PIM for a specific platform, such as J2EE or .NET).

Reference

Software Engineering, Ian Sommerville, 9th edition

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