Software design model elements
Following are the types of design elements:
1. Data design elements- The data design element produced a model of data that represent a high level of abstraction.
- This model is then more refined into more implementation specific representation which is processed by the computer based system.
- The structure of data is the most important part of the software design.
2. Architectural design elements- The architecture design elements provides us overall view of the system.
- The architectural design element is generally represented as a set of interconnected subsystem that are derived from analysis packages in the requirement model.
The architecture model is derived from following sources:- The information about the application domain to built the software.
- Requirement model elements like data flow diagram or analysis classes, relationship and collaboration between them.
- The architectural style and pattern as per availability.
3. Interface design elements- The interface design elements for software represents the information flow within it and out of the system.
- They communicate between the components defined as part of architecture.
Following are the important elements of the interface design:
1. The user interface
2. The external interface to the other systems, networks etc.
3. The internal interface between various components.
4. Component level diagram elements- The component level design for software is similar to the set of detailed specification of each room in a house.
- The component level design for the software completely describes the internal details of the each software component.
- The processing of data structure occurs in a component and an interface which allows all the component operations.
- In a context of object-oriented software engineering, a component shown in a UML diagram.
- The UML diagram is used to represent the processing logic.
5. Deployment level design elements- The deployment level design element shows the software functionality and subsystem that allocated in the physical computing environment which support the software.
- Following figure shows three computing environment as shown. These are the personal computer, the CPI server and the Control panel.
