World Library  
Flag as Inappropriate
Email this Article

Object-modeling technique

Article Id: WHEBN0000208502
Reproduction Date:

Title: Object-modeling technique  
Author: World Heritage Encyclopedia
Language: English
Subject: Unified Modeling Language, IMatch, Syntropy (software), Object-oriented software engineering, OMT
Collection: Object-Oriented Programming, Unified Modeling Language
Publisher: World Heritage Encyclopedia

Object-modeling technique

OMT object diagram

The object-modeling technique (OMT) is an object modeling approach for software modeling and designing. It was developed around 1991 by Rumbaugh, Blaha, Premerlani, Eddy and Lorensen as a method to develop object-oriented systems and to support object-oriented programming. OMT describes object model or static structure of the system.

OMT was developed as an approach to software development. The purposes of modeling according to Rumbaugh are:[1][2]

  • 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.[3] Main concepts are classes and associations with attributes and operations. Aggregation and generalization (with multiple inheritance) are predefined relationships.[2]
  • 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.[2]
  • 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.[2]

OMT is a predecessor of the Unified Modeling Language (UML). Many OMT modeling elements are common to UML.

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.


  1. ^ Rumbaugh et al. (1991:15)
  2. ^ a b c d Terje Totland (1997). 5.2.7 Object Modeling Technique (OMT) Thesis, Norwegian University of Science and Technology (NTNU), Trondheim.
  3. ^ (Rumbaugh et al.,1991:21)

Further reading

  • James Rumbaugh, Michael Blaha, William Premerlani, Frederick Eddy, William Lorensen (1990). 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

External links

  • Some of the early history of OMT

This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.