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SYSTEM ANALYSIS. SYSTEM ANALYSIS. The basis objective of system analysis is to determine the feasibility of a system, and how it will meet the requirement of system users. System analysis involves the following aspects of system development: Feasibility study. Requirement analysis.
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SYSTEM ANALYSIS The basis objective of system analysis is to determine the feasibility of a system, and how it will meet the requirement of system users. System analysis involves the following aspects of system development: • Feasibility study. • Requirement analysis. • Structured analysis.
WHO IS SYSTEM ANALYST??? A system analyst is a person who conducts a study, identifies activities and objectives and determines a procedure to achieve the objectives. Designing and implementing systems to suit organizational needs are the functions of the system analyst. He play a major role in seeing business benefit from computer technology. The analyst is a person with unique skills.
ATTRIBUTES OF AN SYSTEMS ANALYST • Knowledge of people. • Knowledge of business functions. • Knowledge of data processing principles. • Ability to communicate. • Flexibility. • An analytical mind. • Well educated with sharp mind.
FEASIBILITY STUDY Feasibility study is the process of determining whether a system is appropriate in the context of organizational resources and constraints and meet the users requirements. The basic objective of feasible study are to identify whether the proposed system is feasible .During feasibility study analysis, the analyst consider 3 main types of feasibility – Technical, Economical and Operational feasibility, all of which are interrelated.
OBJECTIVES OF FEASIBILITY ANALYSIS • To identify the deficiencies in the current system. • To determine objectives of the proposed system. • To acquire a sense of scope of the system. • To identify the responsible users. • To determine whether it is feasible to develop the new system.
TYPES OF FEASIBILITY • TECHNICAL FEASIBILITY: During this study, the analyst identifies the existing computer system(hardware and software) of the concerned department and determines whether these technical resources are sufficient for the proposed system or not. The main objective of technical study is to determine whether the project is technically feasible. • ECONOMIC FEASIBILITY: Economic feasibility is the most imp. Study that determine the costs and benefits of the proposed system and compare it with the budget. costs/benefit analysis is the common method. If benefit are more than costs, then analyst decide to continue the project otherwise consider it economically not feasible.
Operational feasibility: During operational feasibility study, it is determined whether the system will operate in the way that users wants. Operational feasibility depends upon human resources for the development & implementation of the system. • SOCIAL FEASIBILITY: Social feasibility is a determination of whether a proposed project will be acceptable to people or not. • MANAGEMENT FEASIBILITY: It is a determination of whether a proposed project will be acceptable to management or not. • LEGAL FEASIBILITY: Legal feasibility is a determination of whether the proposed project infringes on known acts, statutes, as well as any pending legislation.
STEPS IN FEASIBILITY STUDY • CONSTITUTION OF A PROJECT TEAM: The objective behind constituting a project team is that future users of the system should be involved in its design and implementation. Their knowledge and experience in the operations are essential to success. • IDENTIFICATION OF POTENTIAL CANDIDATE SYSTEMS: Keeping in mind the objectives for which a new system is required, alternative candidate system should be identified. A no. of system should be identified so that project team has several alt. to choose a system that best fits organization needs.
IDENTIFICATION OF CHARACTERISTICS OF CANDIDATE SYSTEMS: At this stage, the team identifies the various characteristics of candidate systems so that those systems that do nit meet the initial selection criteria are eliminated as it is difficult and time consuming to have a detailed evaluation of large no. of system. • PERFORMANCES AND COST EVALUATION: At this stage, performance of each system is evaluated against the performance criteria set before the start of the feasibility –study. Whatever the criteria may be set there has to be as close as match as possible. the system also evaluated in term of costs.
WEIGHING SYSTEM PERFORMANCE AND COST DATA: Often performances and cost move in the same direction that is if cost is high, it is associated with high performance though it may not be true for all systems. This problem may be overcome by assigning certain weights to performance criteria &costs. • SELECTION OF THE BEST SYSTEM: Based on the weights assigned to different system, the system may be selected that has the highest weight score. Other organizational factors like organizational policy to procure capital goods, resources constraints, suppliers reputation etc. taken into account.
PREPARATION OF FEASIBILITY REPORT: When the feasibility study is complete the project team prepares a feasibility report on the basis of which management takes suitable action including the final selection of system. Usually the project report contain the following items:- • Covering Letter. • Table Of Contents. • Overview. • Description Of Existing System. • Systems Requirements.
Description Of Proposed System. • Development Plan. • Technical Feasibility Findings. • Costs And Benefits. • Operational Feasibility Findings. • Alternatives Considered/Rejected. • Recommendations And Conclusions.
