Learning by building models • The software design process involves gaining knowledge about a problem, and about its technical solution. • We describe both the problem and the solution in a series of design models. • Testing, manipulating and transforming those models helps us gather more knowledge.

• Modeling in science and engineering – Build model of system at some level of precision and detail – Analyze model to get better understanding of system • Software Modeling – Modeling is designing of software applications before coding 33

Software Development Life Cycle Models – A software life cycle model (also called process model) is a descriptive and diagrammatic representation of the software life cycle. Need for a software life cycle Model: – The development team must identify a suitable life cycle model to develop a project..

H. Gomaa, “Chapters 1-5 - H. Gomaa, “Software Modeling and Design: UML, Use Cases, Patterns, and Software Architectures”, Cambridge University Press, February 2011

Software Modeling and Design This book provides all you need to know for modeling and design of soft-ware applications, from use cases to software architectures in UML. It shows you how to apply the COMET UML-based modeling and design method to real-world problems. The author describes architectural pat-

Dominant design strategy for new software systems. Objects communicate by calling on services offered by other objects rather than sharing variables.

create the four design models required for a complete specification of design. The flow of information during software design is illustrated in Figure 8.1. The requirements model, manifested by scenario-based, class-based, flow-oriented, and behavioral elements , …

know the idea (and hopes and promises) of model-based SW development. be able to explain how UML fits into this general picture. know what we’ll do in the course, and why. thus be able to decide whether you want to stay with us... Analogy: Model-based/-driven development by construction engineers.

Modeling is a central part of all the activities that lead up to the deployment of good software. We build models to communicate the desired structure and behavior of our system. We build models to visualize and control the system’s architecture.

Software (Engineering) Process Models are simplified and abstract description of a software process that presents one view of that process.