Assignment Overview

In this assignment you will be creating a two level Data Flow Diagram $($DFD$)$ for the problem

designed below. You will be responsible for creating the following:

$$ A top level Context Diagram, which shows the overall system and external entities

interactions

$$ A level $0($zero$)$ diagram, which shows how the entities interact with the main processes

in the system

Remember, the main purpose of the DFD is to show how data moves in and out of the system,

the transformations that take place within the system and what data is stored in the system.

Problem Description:

A counselling office currently has no software systems or experience using a software system,

everything is achieved using paper and phone methods currently. The office would like a

system where clients can submit requests for appointments, view their upcoming appointments

and are able to ensure the system takes care of sending invoices and tracking payments

received. A calendar view of each day for each counsellor will be required to keep the

counsellor on schedule.

The office has $6$ employees. Two employees who are at the reception desk $($answering the

phone, handling invoices, billing and payments$).$ There are $3$ employees who are counsellors at

the office. Then there is an office manager. They handle issues with scheduling conflicts and

billing.

On the second page is a sample of the information required to book an appointment $.$

work with the same partner you did in Assignment $1.$

Grading

The submission will be graded as follows.

Document Format

$$ Diagrams are clear and all information is visible and readable

$$ Diagrams use correct symbols for each component

$$ Diagrams do not break any of the DFD Rules presented in lecture

Context Diagram

$$ Identifies the external entities and the data flow in and out of the main system

Level $0$ Diagram

$$ Identifies the major subsystems in the project

$$ Identifies the flow of data from the external entities to each subsystem

$$ Identifies the data stores required