Model-Driven Mechanism in Information Systems and Enterprise Engineering

Model-Driven Mechanism in Information Systems and Enterprise Engineering An extract from the lecture on Enterprise, Model, and Information System , by Mountriver TY Yu, at Management School, Jinan University, Guangzhou, China, September 23, 2007

Towards Models The traces of models are much more than the imagination at the beginning

Models and Modeling Some thing Modeling Past Future Present Designed Clear, Disambiguous Model: a blueprint which is established according to some predetermined rules, to achieving expected and accurate understanding or uses Modeling Rules (Languages) and, able to be handled by computer… Models

Some typical answers to the uses of models
visualization, graphical representation or image;
accurate representation with strict semantics instead of free speech;
recording, sharing, communicating, to reach a common understanding;
for analysis, diagnosis, evaluation, study;
for planning (reengineering), implementation;
for integration, interoperation;
model-driven system development (MDD, MDE);
simulating (the classical field for models and modeling);
...
However, are there more fundamental answer?

Model-Driven Mechanism An advanced mechanism to the functions and behaviors of a system

Some mechanism to changing or control the behaviors/functions of a system Operator / Controller driving / controlling showing / acting on Direct-Driving / Control Mechanism Environment Object Observer Functional System

Some mechanism to changing or control the behaviors/functions of a system in-put out-put Feedback Mechanism Operational Device Controller Environment Object Observer control feedback loop Functional System Operator Controller adjust

A more advanced mechanism to changing or control the functions/behaviors of a system Operational Device Modeler (Controller) Modeling Knowledge modeling according-to / utilizes driving / executing according-to / interpreted-by effected / operated-on Environment Object Observer MDM is the common fundament for both MDS and MDA/MDD. It may be an intrinsic mark for that complex systems are evolved into an advanced stage. It accesses/uses the applied models according to the modeling knowledge It is worked and can be changed in runtime . RUNTIME Applied Model(s)

Some points to understanding MDM/MDS
The independence of models : The models is independent of media and system, and can be modified, reproduced, transmitted or transferred.
The timeliness of models *: The models work in runtime within the system.
The evolvability of models *: MDS/MDM allows continuous changing the models when they are working in a system at runtime.
The non-exclusive of MDM : It can be co-existed with other mechanisms in a system.
* Proposed in Yu 2002.
Note
Based on fixed model(s), i.e., can not be changed in runtime, is not a model-driven system.
Model-Driven ≠ Model-Based

Model-Driven Mechanism (MDM) 1999 - 2005 Operational Device Controller Applied Model Modeling Knowledge modeling Model-Driven Mechanism (MDM) makes all or part of functions and behaviours (or the structure and form) of a system to be controlled or mastered by model(s). (Yu 2005) according-to / utilize-by driving / control according-to / interpret-by showing acting on Environment Object Observer Functional System Model-Driven System (MDS)

Model-Driven Systems (MDS) For a system, if all of its functions and behaviors can be defined, controlled and changed through MDM in runtime , then it is a full model-driven system (MDS). In brief, MDS is a class of system that the main functions and behaviors are controlled or realized with MDM. (Yu 2005)

Two ways to changing the functions and behaviors of a system on MDM CHANGE Way 1: direct Way 2: indirect Operational Device or System Modeler (controller) Modeling Knowledge modeling according-to / utilizes driving / used-by according-to / interpreted-by effected / operated on Environment Object Observer Applied Model(s) RESPONDING Discoverer and Creator

Examples of MDM/MDS
MDM is appearing in many sorts of system which have own functions or behaviors, such as software, automobiles, businesses, development projects, and so on. For instance
Many real-time embedded systems;
Executable model(s) + engine, or script + virtual machine;
Relational database management systems (and in Codd's 12 rules);
Model-Driven development (MDD): as a system producing software;
Computers themselves is one of the best example: "software" is model, the application (with the hardware in runtime) is a model-driven system;
...
Thoughts are models, so, a human being is the most advanced model-driven system.

Using Model-Driven Mechanism in Information Systems (ISs)

Model-Driven Enterprise Information Systems (MDEIS) Functional Engine Modeler, Enterprise Engineer Modeling Rules, Languages, Frameworks, Ref. Models User, Business Staff Software Developer according-to Enterprise Architect development modeling Constructing new generation of enterprise information systems on MDM They are enterprise / business models Application System Applied Models

A demand-driven architectural framework for development of ISs, based on MDM Study-Create Discover-Solve Implementing Team Modeling Knowledge design / modeling according-to / utilizes driving / executing effected / operated-on Out-put: App System s Discoverer and Creator Foreign Knowledge direct use indirect use analysis and study Indeed, this is also an explanation about the system of model driven development. according-to / interpreted-by Planner Modeler Applied Models (Requirements)

Using Model-Driven Mechanism in Enterprise Engineering (EE)

The gap between business and IT in Enterprise Engineering
One of the basic purpose of Enterprise Engineering was to bridge the gap between business and IT.
But in past EE, e.g., from James Martin, the methods were still paper-based, traditional and manual.
Of course, this was not “his” problem, this is still one of the biggest problems we face today.
We can further fill the gap left in EE, through MDM.

The gap left in EE this picture simplified from the Exhibit 5.10 "The fusion of business methods and IT methods", Martin (1995, p80) Information Engineering Business Reengineering Software Engineering Total Quality Management the methods were still paper-based, traditional and manual Enterprise Engineering

To fill the gap in Enterprise Engineering by MDM Enterprise Engineering Information Engineering Business Reengineering Software Engineering Total Quality Management EM MDS To use an enterprise model driven information system to supporting EE MDM C A P D Enterprise Platform EE/EA EM

The relationships between the three fields of Enterprise Engineering Practice Technology Knowledge Analysis / Modeling Driving / Conversion / Mapping Analysis / Modeling Tools, Model-Driven Platforms the principle the models work on: Model-Driven Mechanism Models

Example in EE: an architectural framework for promoting and implementing e-government Planner according-to / utilizes Government Objects to Service making a dynamic cycle on MDM IT Apps Development Implementation System of E-government Government (Business) Framework/Models Knowledge of Modeling and Gov. Engineering according-to / utilizes according-to / interpreted-by driving / executing effected / operated-on the models are independent of IT

Example in EE: an architectural framework for promoting and implementing e-government Government Objects to service more relationships and roles Implementation System of E-government Government (Business) Framework/Models Knowledge of Modeling and Gov. Engineering the position of the researcher to government engineering Implementer implement Discoverer and Creator Reviewer and Auditor Foreign Knowledge Planner Modeler Note. In general, of course, this is also an architectural framework for EE (and, the EA).

References
Martin, James (2005) The Great Transition: using the seven disciplines of enterprise engineering to align people, technology and strategy , James Martin -1st AMACOM pbk. ed.
Yu, TY Mountriver (2005) New Generation of Enterprise Information System: From Essential Requirements Analysis and Research to Model-Driven System , EE-Forum.org, http://www.ee-forum.org/downloads/YU_MDEIS2005_050216b.pdf
Yu, TY Mountriver (2002) The Hierarchical Principle of Complex System and Model-Driven Software Architecture , EE-Forum.org, http://www.ee-forum.org/hm.html (in Chinese)

Remarks
This slide is an extract from the lecture on Enterprise, Model, and Information System, at Management School, Jinan University, Sep 23, 2007. This English version was translated from the whole presentation in Chinese, with a bit modification. The original file at http://www.ee-forum.org/downloads/ty_jnu070917a.pps
Mountriver TY Yu, January 14, 2012, China
E-mail: tongying.yu (at) gmail.com

Model-Driven Mechanism in Information Systems and Enterprise Engineering

by Mountriver TY Yu on Jan 14, 2012

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Model-Driven Mechanism in Information Systems and Enterprise Engineering — Presentation Transcript