Systems Analysis - MIM

[Pages:283]Diploma in

Business Administration

Study Manual

SYSTEMS ANALYSIS

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ABE Diploma in Business Administration

Study Manual

SYSTEMS ANALYSIS

Contents

Study

Title

Unit

Syllabus

1 Information and Systems Information and Data Information Needs Types of Information Management Information Systems Theory Objectives of a System A Basic Information System Decision Support Systems

2 Computing within Organisations The Development Life Cycle Systems Analysis ? Feasibility Study Systems Analysis - Data Collection

3 Systems Development and Project Management Approaches to System Development "Hard" and "Soft" Systems Characteristics of a "Good" Systems Analysis Methodology Selecting an Appropriate Methodology Management of Change Project Management Problems During Development Rules of Project Management Specific Development Controls Control Techniques

Page

i

1 3 3 5 8 10 12 13 14

16 18 20 25

31 36 38 41 41 44 46 48 49 50

4 System Specification

The Development Life Cycle

59

Specification of Requirements

62

The Personnel Involved

65

Systems Investigation

71

The Feasibility or Initial Study

79

Using Consultants

84

5 System Design

Logical and Physical Design

88

The Design Stage

89

System Design Specification

92

Design Considerations

93

Human-Computer Interface

96

6 Approaches to Systems Analysis and Design

Structured Systems Analysis and Design Methodology

102

Working with Users

105

Rapid Application Development (RAD)

110

Joint Application Development (JAD)

110

Skilled Small Team Development

112

Prototyping

112

Computer Aided Software Engineering (CASE)

114

7 Data Flow Diagrams

System Definition

118

Structured Systems Analysis and Design Methodology (SSADM)

118

Data Flow Diagrams (DFDs)

119

Drawing Data Flow Diagrams

123

Advantages and Disadvantages of DFDS

124

Worked Examples

125

8 Data Modelling

Entity-Relationship Models (Or Logical Data Structures)

128

Worked Example

131

Data Dictionaries

133

Case Tools

135

Normalisation

136

Fitting The Techniques Together

138

9 Entity Life Histories

ELH Notation

142

Interrelationship Between The DFD, Entity-Relationship Model

148

And The ELH.

Worked Example

148

10 Standards and Documentation

The Role and Scope of Standards

152

The Standards Manual

155

Other Documentation

156

Using Standard Forms

158

11 Systems Implementation

The Implementation Process

162

User Involvement

165

Changeover Strategies

165

Post-Implementation Reviews

171

Training

175

12 System Maintenance and Security

Monitoring

180

Systems Maintenance

181

Database Maintenance

182

System Enhancements

183

Need for System Security

184

Security Measures

187

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