System Analysis and Design Flashcards

Flashcards to review key concepts from the System Analysis and Design lecture notes.

What is a system?

A collection of components that work together to realize some objectives.

What are the three major components in every system?

Input, processing, and output.

What is a system life cycle?

An organizational process of developing and maintaining systems.

What are the different phases of system development life cycle?

Preliminary study, feasibility study, detailed system study, system analysis, system design, coding, testing, implementation, and maintenance.

What is a preliminary system study?

A brief investigation of the system under consideration to understand the physical system.

What is the main goal of feasibility study?

To test the proposed system in light of its workability, meeting user’s requirements, effective use of resources and cost effectiveness.

What are the categories of feasibility?

Technical, operational, economic, and schedule feasibility.

What does a detailed system study involve?

A detailed study of various operations performed by a system and their relationships within and outside the system.

What is the main activity during systems analysis?

Collecting factual data, understanding the processes involved, identifying problems and recommending feasible suggestions for improving system functioning.

What happens during the preliminary or general design phase?

Features of the new system are specified, and the costs of implementing these features and benefits are estimated.

What elements are designed in the structured or detailed design stage?

Input, output, databases, forms, codification schemes, and processing specifications are drawn up in detail.

What is the purpose of the coding phase?

Converting the design into computer-understandable language (programming language).

What is the main goal of the testing phase?

Removing bugs before implementing the new system.

What types of test runs are carried out?

Program test and system test.

What are the major steps involved in the system implementation phase?

Acquisition and installation of hardware and software, conversion, user training, and documentation.

What strategies are followed for changeover of the system?

Direct changeover, parallel run, and pilot run.

What are the two types of documentation prepared for any system?

User documentation and system documentation.

Why is system maintenance necessary?

To eliminate errors in the system during its working life and to tune the system to any variations in its working environments.