Model-driven engineering

Model-driven engineering (MDE) is a software development methodology which focuses on creating and exploiting domain models (that is, abstract representations of the knowledge and activities that govern a particular application domain), rather than on the computing (or algorithmic) concepts. The MDE approach is meant to increase productivity by maximizing compatibility between systems (via reuse of standardized models), simplifying the process of design (via models of recurring design patterns in the application domain), and promoting communication between individuals and teams working on the system (via a standardization of the terminology and the best practices used in the application domain).

A modeling paradigm for MDE is considered effective, if its models make sense from the point of view of a user that is familiar with the domain, and if they can serve as a basis for implementing systems. The models are developed through extensive communication among product managers, designers, developers and users of the application domain. As the models approach completion, they enable the development of software and systems.

Some of the better known MDE initiatives are:


History of MDE

The first tools to support MDE were the Computer-Aided Software Engineering (CASE) tools developed in the 1980s. Companies like Integrated Development Environments (IDE - StP), Higher Order Software (now Hamilton Technologies, Inc., HTI), Cadre Technologies, Bachman Information Systems, and Logic Works (BP-Win and ER-Win) were pioneers in the field. Except for HTI's 001AXES Universal Systems Language (USL) and its associated automation (001), CASE had the same problem that current MDA/MDE tools have today: the model gets out of sync with the application (see below). The US government got involved in the modeling definitions creating the IDEF specifications. With several variations of the modeling definitions (see Grady Booch, Jim Rumbaugh, Ganes, Sarson, Harel, Shlaer, Mellor, and others) they were eventually joined creating the Unified Modeling Language (UML). Rational Rose, the dominant product for UML implementation, was done by Rational Corporation (Booch) which in 2002 was acquired by IBM.

MDE as used in software engineering

As it pertains to software development, model-driven engineering refers to a range of development approaches that are based on the use of software modeling as a primary form of expression. Sometimes models are constructed to a certain level of detail, and then code is written by hand in a separate step. Sometimes complete models are built including executable actions. Code can be generated from the models, ranging from system skeletons to complete, deployable products. With the introduction of the Unified Modeling Language (UML), MDE has become very popular today with a wide body of practitioners and supporting tools. More advanced types of MDE have expanded to permit industry standards which allow for consistent application and results. The continued evolution of MDE has added an increased focus on architecture and automation.

MDE technologies with a greater focus on architecture and corresponding automation yield higher levels of abstraction in software development. This abstraction promotes simpler models with a greater focus on problem space. Combined with executable semantics this elevates the total level of automation possible. The Object Management Group (OMG) has developed a set of standards called model-driven architecture (MDA), building a foundation for this advanced architecture-focused approach.

According to Douglas C. Schmidt, model-driven engineering technologies offer a promising approach to address the inability of third-generation languages to alleviate the complexity of platforms and express domain concepts effectively[2].

MDE and Rapid Applications Development

Very Rapid Applications Development uses Object Programming to separate that the customer demands from software. It is Model Driven Engineering applied to Rapid application development EDI. One stage of programing is deleted which is the development of the software from the analysis. Some passive files are read from the VRAD engine to create the software. The passive files are the analysis.


See also



  1. ^ Object Management Group (2006-05-24). "OMG Trademarks". Retrieved 2008-02-26. 
  2. ^ Schmidt, D.C. (February 2006). "Model-Driven Engineering". IEEE Computer 39 (2). Retrieved 2006-05-16. , "A promising approach to address platform complexity—and the inability of third-generation languages to alleviate this complexity and express domain concepts effectively—is to develop Model-Driven Engineering (MDE) technologies..."

Further reading

  • Model Driven Architecture: Applying MDA to Enterprise Computing, David S. Frankel, John Wiley & Sons, ISBN 0-471-31920-1

External links

Wikimedia Foundation. 2010.

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