Design Document

Why Do We Write A Design Document?
 
A design document will be written by software developers and given to a software development team for the guidance of architecture of the software project.
Before starting coding of a project, the project objective needs to be understood.
So the Design document is to write down an outline of a course of development, or, in other words, a description of a software product.

It generally describes the modules, learning assessment method, and source content.

Elements of Design Document:

1. Introduction
2. Design Considerations
3. Architecture
4. System Architecture
5. Detailed System Design
6. Glossary
7. Bibliography

Structure of Design Document:
1 Introduction
2 Design History
3 Document Description
    3.1 Overview
    3.2 System Overview
    3.3 Design Considerations
         3.3.1 Assumptions and Dependencies
         3.3.4 Goals and Guidelines
         3.3.5 Development Methods
    3.4 Architectural Strategies
    3.5 System Architecture
    3.6 Detailed System Design
    3.7 Glossary
    3.8 Bibliography
4 Appendix