Software Design

Software  Design:

• Software design is a mechanism to transform user requirements into some suitable form, which helps the programmer in software coding and implementation.

• Software design is both a process and a model. The design process is a sequence of steps that enables the designer to describe all aspects of the software for building. Creative skill, past experience, a sense of what makes "good" software, and an overall commitment to quality are examples of critical success factors for a competent design.It deals with representing the client's requirement, as described in SRS (Software Requirement Specification) document, into a form, i.e., easily implementable using programming language.
• The software design phase is the first step in SDLC (Software Design Life Cycle), which moves the concentration from the problem domain to the solution domain. In software design, we consider the system to be a set of components or modules with clearly defined behaviors & boundaries.

 

Objectives:

1. Correctness:Software design should be correct as per requirement.It should correctly implement all the functionalities of the system.
2. Completeness:The design should have all components like data structures, modules, and external interfaces, etc.
3. Efficiency:Resources should be used efficiently by the program.
4. Flexibility:Able to modify on changing needs.
5. Consistency:There should not be any inconsistency in the design.
6. Maintainability: The design should be so simple so that it can be easily maintainable by other designers.

Basic  Concept  of  Software  Design:

Concepts of Software Design:

The software design concept simply means the idea or principle behind the design. It describes how you plan to solve the problem of designing software, the logic, or thinking behind how you will design software. It allows the software engineer to create the model of the system or software or product that is to be developed or built.