This lecture mainly contains about the system development lifecycle and system design
The system developement and designing always should be well planned and have strong end point and these gives the organization to get the desired output.
The good analysing and designing gives reliable, robust and efficient system.
The lifecycle of system developement
*Planning - Understanding the problem and ensuring the feasibility and obtaining approval
*Analysing - Gathering the detail from ongoing process and getting the idea for the new system and knowing "What system should do?"
*Design - After analysing, getting an image of the organization structure and gathering the requirements.
*Implementation - In this stage all the program developement will be done ex - coding, testing, programming. and user training.
*Support/maintenence - After the Implementation of system, this stage will continues forever and this stage includes problem solving, system running and System maintenence.
The main models in system developement are
Flowchart, data flow diagram, Entity relationship diagram, usecase diagram and sequence diagram.
The main tools they used system developement
Project management application
Drawing tools
Computer aided software etc
There are two different approaches in system designing
1.Traditional approach
2.Structured Programming
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