System Analysis
www.icm.ac.uk
SYSTEMS ANALYSIS
TUTORS These notes are designed to assist teachers of the course and are in a condensed format. Teachers should also consult the syllabus for this module and adapt these notes accordingly by using extra examples and by filling out this material with detail. Students will be expected to apply the material in a BUSINESS environment and with reference to the particular situation specified in the examination question. Repeating these or any other notes in a generalised form is unlikely to satisfy the required answers for any question. Candidates need to have an understanding of • The need for systems analysis for business in the development of new systems. • The role of the systems analyst in this development. • Other people involved – who they are, at what stages in the development and how they are involved.
DEFINITION
System is the grouping of methods and data to provide the required information and outputs in a business. Systems outside of business of public administration need not be considered Systems Analysis is the process of investigation of a system’s operation with a view to changing it to new requirements or improving its current working.
NEED FOR SYSTEMS ANALYSIS
Business systems are usually complex. Making changes to a system without reference to its effects on other subsystems or current working practices could result in a worsening rather than improvement. Systems analysis will identify 1. outputs and processing needed. 2. data required to provide this processing and output. 3. role of people in the process. 4. security aspects to ensure the efficient continuation of the business. 5. costs of providing the system. THE ROLE OF THE SYSTEMS ANALYST • Liaison with senior management and the computer manager (Data Processing Manager [DPM]) on the need for new/improved systems. Agree guidelines for the development of a new system and draw up guidelines for an initial investigation and a feasibility study. • Investigate
SYSTEMS ANALYSIS
TUTORS These notes are designed to assist teachers of the course and are in a condensed format. Teachers should also consult the syllabus for this module and adapt these notes accordingly by using extra examples and by filling out this material with detail. Students will be expected to apply the material in a BUSINESS environment and with reference to the particular situation specified in the examination question. Repeating these or any other notes in a generalised form is unlikely to satisfy the required answers for any question. Candidates need to have an understanding of • The need for systems analysis for business in the development of new systems. • The role of the systems analyst in this development. • Other people involved – who they are, at what stages in the development and how they are involved.
DEFINITION
System is the grouping of methods and data to provide the required information and outputs in a business. Systems outside of business of public administration need not be considered Systems Analysis is the process of investigation of a system’s operation with a view to changing it to new requirements or improving its current working.
NEED FOR SYSTEMS ANALYSIS
Business systems are usually complex. Making changes to a system without reference to its effects on other subsystems or current working practices could result in a worsening rather than improvement. Systems analysis will identify 1. outputs and processing needed. 2. data required to provide this processing and output. 3. role of people in the process. 4. security aspects to ensure the efficient continuation of the business. 5. costs of providing the system. THE ROLE OF THE SYSTEMS ANALYST • Liaison with senior management and the computer manager (Data Processing Manager [DPM]) on the need for new/improved systems. Agree guidelines for the development of a new system and draw up guidelines for an initial investigation and a feasibility study. • Investigate