Task 1: Creating a Context Diagram for the System
The Subject Learning Outcomes demonstrated by successful completion of the task below include:
a) Identify, critically evaluate and recommend information systems solutions for inefficiencies in business processes, procedures and work practices using data and process modelling techniques.
b) Formulate, validate and document business requirements for a medium-scale information system development project and effectively communicate these requirements to the stakeholders.
c) Demonstrate the ability to effectively analyse, design and develop information systems using Unified Modelling Language (UML) models
Please complete the following tasks:
Create and document a Context Diagram for the System.
Create and document a Level 0 Data Flow Diagram (DFD). The Level 0 DFD should contain all the major high-level processes of the System and how these processes are interrelated.
Select three major and non-trivial processes from Level 0 DFD, decompose each of the processes into a more explicit Level 1 DFD.
Using your own experience with similar online student enrolment systems and the information provided in the case study:
(i) Identify all the entities and their relationships in the System
(ii) Create and document an Entity Relationship Diagram (ERD) for the System.
Note: the case study has not and does not intend to provide a comprehensive description of entities in the System. You are expected to use your own experience with information systems in general and online student enrolment systems in particular to develop this ERD.
Should data be stored in files in a file system or in a database for the System? Justify your answer.
Translate the ERD you developed in Task 4 into a physical relational database design. Document database tables and their relationship in MSWord file. Normalise your database
design to the Third Normal Form (3NF).