testing physical entities before building them (simulation),
communication with customers,
visualization (alternative presentation of information), and
reduction of complexity.
OMT has proposed three main types of models:
Object model: The object model represents the static and most stable phenomena in the modeled domain. Main concepts are classes and associations with attributes and operations. Aggregation and generalization (with multiple inheritance) are predefined relationships.
Dynamic model: The dynamic model represents a state/transition view on the model. Main concepts are states, transitions between states, and events to trigger transitions. Actions can be modeled as occurring within states. Generalization and aggregation (concurrency) are predefined relationships.
Functional model: The functional model handles the process perspective of the model, corresponding roughly to data flow diagrams. Main concepts are process, data store, data flow, and actors.
Functional Model in OMT:
In brief, a functional model in OMT defines the function of the whole internal processes in a model with the help of "Data Flow Diagrams (DFDs)". It details how processes are performed independently.
James Rumbaugh, Michael Blaha, William Premerlani, Frederick Eddy, William Lorensen (1994). Object-Oriented Modeling and Design. Prentice Hall. ISBN 0-13-629841-9
Terry Quatrani, Michael Jesse Chonoles (1996). Succeeding With the Booch and OMT Methods: A Practical Approach. Addison Wesley. ISBN 978-0-8053-2279-8
Some of the early history of OMT
A short introduction to OMT
The model is defined by the organization’s vision, mission, and values, as well as sets of boundaries for the organization—what products or services it will deliver, what customers or markets it will target, and what supply and delivery channels it will use. While the business model includes high-level strategies and tactical direction for how the organization will implement the model, it also includes the annual goals that set the specific steps the organization intends to undertake in the next year and the measures for their expected accomplishment. Each of these is likely to be part of internal documentation that is available to the internal auditor.