Chapter 1 Notes

Chapter 1 Notes - 1 Chapter 1 Assuming the Role of the...

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Unformatted text preview: 1 Chapter 1 Assuming the Role of the Systems Analyst Systems Analysis and Design Kendall & Kendall, Seventh Edition 2 Major Topics ยก Information systems ยก Phases of analysis and design ยก System maintenance ยก CASE tools ยก Alternate methodologies 2 3 Test Slide A B C D 0% 0% 0% 0% 1. A 2. B 3. C 4. D 4 Information ยก Information ยก An organizational resource, which must be managed as carefully as other resources to take full advantage of its potential. ยก Costs are associated with information processing. ยก Production ยก Distribution ยก Security ยก Storage ยก Retrieval 3 5 ยก Information System ยก System consisting of humans, technology and procedures to collect, process, transmit, and disseminate data and / or information 6 Categories Categories of Information systems: ยก Transaction processing systems (TPS). ยก Office automation systems (OAS). ยก Knowledge work systems (KWS). ยก Management information systems (MIS). ยก Decision support systems (DSS). ยก Expert systems (ES) and Artificial Intelligence (AI). ยก Group decision support systems (GDSS) a ยก Computer-Supported Collaborative Work Systems. ยก Executive support systems (EES). 4 7 Strategic Level Operational Level Knowledge Level Higher Level A systems analyst may be involved with any or all of these systems at each organization level 8 Types of Information Systems & Systems Development ยก Operational Level ยก Transaction Processing Systems (TPS) ยก Automate handling of data about business activities (transactions) ยก Supports the day โ€“ to- day operations ยก Knowledge Level ยก Office Automation System (OAS) ยก Supports data workers who share information, but do not usually create new knowledge ยก Examples: Word processing, Spreadsheets, Desktop publishing, Electronic scheduling, Communication through voice mail, Email, Video conferencing ยก Knowledge Work System (KWS) ยก Supports professional workers such as scientists, engineers, and doctors ยก Examples: computer-aided design systems, virtual reality systems, investment workstations 1.8 1.8 5 9 Types of Information Systems & Systems Development ยก Higher Level ยก Management Information Systems (MIS) ยก Converts raw data from transaction processing system into meaningful form ยก Examples: profit margin by sales region, expenses vs. budgets ยก Decision Support Systems (DSS) ยก Designed to help decision makers ยก Provides interactive environment for decision making ยก Examples: financial planning with what-if analysis, budgeting with modeling ยก Expert System (ES) ยก Captures and uses the knowledge of an expert for solving a particular problem which leads to a conclusion or recommendation ยก Examples: MYCIN, XCON 1.9 1.9 10 Types of Information Systems & Systems Development ยก Strategic Level ยก Executive Support System (ESS) ยก Helps executives to make unstructured strategic decisions in an informed way ยก Examples: drill-down analysis, status access ยก Group Decision Support System (GDSS) ยก Permit group members to interact with electronic support...
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Chapter 1 Notes - 1 Chapter 1 Assuming the Role of the...

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