MDD%20and%20Formal%20Methods

1
MDD and Formal Methods

• Shusaku Iida
• School of Network and Information
• Senshu Univ.

2
Conclusion

• MDD and formal methods are the same story that
  have different faces
• MDD doesnt care much about the formality
• formal methods doesnt care much about usability
• these two issues are strongly related to
• language design

3
What is MDD?

• MDD(Model Driven Developments)
• model means specification
• in MDD you have to think about how to build and
  how to use models in system developments

model A
additional infomation
transformation rules
model A
4
Our experience

• we have built a blimp type robot by MDD
• out team includes five undergraduate students and
  two engineers from a company, and several
  advisors
• we have built more than 30 models (UML diagrams)
  mainly written in UML
• work period is about two months
• and, our blimp sailed!
• however, building models are quite tough
• especially for undergraduate students

5
What is good and what is not about MDD

• good
• from the start, we dont have to be so strict
• there are several tools available for modeling
• many people know something about UML
• not good
• we cannot be sure that our model is correct
• there is few way to check it
• we have to invent the transformation rules by our
  selves
• so the productivity is low

6
What shall we do?

• We need to study interface of specification
  languages
• Z has succeeded because it has special fonts and
  type-checker
• We need to study more about language design
• one possible idea is Language Workbenches by
  Martin Fowler
• Domain Specific Languages can be the bridge
  between domain experts and MDD
• and formal specification languages can help a lot