Chapter 12A - The basics of information systems. This chapter includes contents: Purpose of information systems, types of information systems, expert system, information systems technology, virtual private network, information systems hardware,. | McGraw-Hill Technology Education Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved. Chapter 12A The Basics of Information Systems Purpose of Information Systems Information systems Collects, stores and organizes information Retrieves value from data Harness many types of data Computer’s reason for existence Purpose of Information Systems Components of an information system Physical means of storing information Procedures for ensuring data integrity Rules regarding data use and distribution Means of distributing the data Tools to organize the data Teaching tip Data integrity is the most important portion of the IS. Many administrators have lost jobs due to failure in applying data integrity rules. Types of Information Systems Office automation systems Performs various office tasks Allows users to efficiently handle data Tedious tasks become simple Built using off-the-shelf systems Allow seamless integration of data Discussion point Microsoft Office is the dominant product, costing several hundred dollars. OpenOffice is a compatible product, costing nothing. Why do organizations continue to use MS Office instead of OpenOffice? For more information on OpenOffice, see . Types of Information Systems Transaction processing systems (TPS) Transaction is a complete event Completed in a series of steps Tracks and processes transactions Each step is monitored Details sent to the appropriate person Errors must be remedied immediately Teaching tip An excellent example of a TPS is FedEx and UPS’ tracking systems. Users can enter in the tracking number at any time, and receive a rough estimate of it’s location in transit. Types of Information Systems Management information systems (MIS) Tools for managers and decision makers Organizes and evaluates information Summarizes reports based on need Managers require different views of data Management Information System Types of Information Systems Decision support system Organizes . | McGraw-Hill Technology Education Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved. Chapter 12A The Basics of Information Systems Purpose of Information Systems Information systems Collects, stores and organizes information Retrieves value from data Harness many types of data Computer’s reason for existence Purpose of Information Systems Components of an information system Physical means of storing information Procedures for ensuring data integrity Rules regarding data use and distribution Means of distributing the data Tools to organize the data Teaching tip Data integrity is the most important portion of the IS. Many administrators have lost jobs due to failure in applying data integrity rules. Types of Information Systems Office automation systems Performs various office tasks Allows users to efficiently handle data Tedious tasks become simple Built using off-the-shelf systems Allow seamless integration of data Discussion point Microsoft Office is the dominant
