6 describe five types of information systems and give

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Systems Analysis and Design
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Chapter 2 / Exercise 10
Systems Analysis and Design
Tilley
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6. Describe five types of information systems, and give an example of each. Enterprise computing systems, transaction processing systems, business support systems, knowledge management systems, and user productivity systems. Enterprise computing refers to information systems that support company-wide operations and data management requirements. Wal-Mart’s inventory control system, Boeing’s production control system, and Hilton Hotels’ reservation system are examples of enterprise computing systems. The main objective of enterprise computing is to integrate a company’s primary functions to improve efficiency, reduce costs, and help managers make key decisions. Transaction processing (TP) systems process data generated by day-to-day business operations. Examples of TP systems include customer order processing, accounts receivable, and warranty claim processing. Business support systems provide job-related information support to users at all levels of a company. These systems can analyze transactional data, generate information needed to manage and control business processes, and provide information that leads to better decision-making. For example, Wal- Mart, which requires its suppliers to add radio frequency identification, RFID, tags to all items. A retailer might use to determine the price it must charge to increase profits by a specific amount while volume and costs remain unchanged. Knowledge management systems simulate human reasoning by combining a knowledge base and inference rules that determine how the knowledge is applied which consists of a large database that allows users to find information by entering keywords or questions in normal English phrases. A knowledge management system uses inference rules, which are logical rules that identify data patterns and relationships for example, Toshiba maintains for its customers and users. Companies provide employees at all levels with technology that improves productivity. Examples of user productivity systems include e-mail, voice mail, fax, video and Web conferencing, word processing, automated calendars, database management, spreadsheets, desktop publishing, presentation graphics, company intranets, and high-speed Internet access.
7. Describe four organizational levels of a typical business and their information requirements.
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Chapter 2 / Exercise 10
Systems Analysis and Design
Tilley
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Middle managers provide direction, necessary resources, and performance feedback to supervisors and team leaders. Because they focus on a somewhat shorter time frame, need more detailed information. They review a weekly sales summary for a three-state area. Supervisors, often called team leaders, oversee operational employees and carry out day-to-day functions. They coordinate operational tasks

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