Question

Systems Analysis and Design

Create a Context Diagram for a purchasing system.

Create this first level of a DFD for this system.

Help is much appreciated. Thank you..

Answer 1

System Analysis and Design:

It gathers the requirement of bussiness needs,checks for the priority of the requirements analyses the required hardware,software and network requirements and designs according to needs [creates a blueprint for project requirement ].

The main difference between DFD and context Diagram is

DFD is explained in detail,with the flow of diagram

Context Diagram explains generally how the data flows.

Explanation For Diagrams:

PURCHASE SYSTEM is DATABASE MANAGEMENT SYSTEM firstly it checks the requirement of materials and updates to---> REQUIREMENT MANAGEMENT----> places the orders.---> ORDERS --->does two jobs prints bill to PURCHASE SYSTEM ,sends orders to----> SUPPLIERS---> checks for the bills and delivers to MATERIAL HANDLING MANAGEMENT--->checks and updates to PURCHASE SYSTEM.