Quan Zhou

Section O0A

Book: Introduction to System Analysis and Design.

Author: Igor  Hawryzkiewycz

Reference No. T 57.6 H38 199la

Chapter:  Chapter  2

                This chapter describes more about the typical computer-based information systems in more details. It began by describing the distinction between transaction systems and decision support systems and followed with an outline of the batch and on-line modes of operation. This was followed by a description of some typical information systems and concluded with two cases which exemplify the kind of work often undertaken by analysts.

                There are several differences in the ways computer-based information systems work. First, there is the distinction between transaction systems and decision support systems. Transactions are input into the computer to update computer files or databases, while the decision support systems are different from transaction systems.

                I have learned that one important subsystem in most organizations is the system which keeps personal details about people in the organization. It includes the data about employee’s birth, addresses, marital status and medical histories.

                I have also learned that the goal of client systems is to provide service to the clients.  They followed a specific pattern which starts with the order of customer. They save the order of the customer in a file or computer.