You have created the use case model that describes the requirements
for the application and created an analysis model that identifies the application
domain requirements and describes how the application will be structured.
The next step in the development process is to build on the analysis model
by exploring the architecture and implementation choices for the application.
About this task
The design phase takes the high-level model created
during analysis and adds details to the actual implementation of the system.
Using a variety of diagrams, including sequence, state machine, component,
and deployment diagrams, you can create a model that describes, in detail,
how the application is structured and how it will be implemented. Programming
constructs and technologies, such as those used for persistence, distribution,
security, and logging, are described. You can further refine the design model
by applying design patterns that capture frequently used or complex structures
and processes.
When you are ready to move to the implementation phase, the
design model can be transformed to application code.