G voyage estimating system of metals company that

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Unformatted text preview: ecision support systems (DSS) • Support non-routine decision making for middle management • E.g. What would impact on production schedules be if sales doubled in December? • Use information from TPS, MIS, and external sources • Use models to analyze data • • 2.34 E.g. voyage estimating system of metals company that calculates financial and technical voyage details Focus on extracting, analyzing information from large amounts of data Essentials of Business Information Systems Chapter 2 E-Business: How Businesses Use Information Systems Systems That Span the Enterprise Voyage-Estimating Decision Support System Figure 2-11 This DSS operates on a powerful PC. It is used daily by managers who must develop bids on shipping contracts. 2.35 Essentials of Business Information Systems Chapter 2 E-Business: How Businesses Use Information Systems Types of Business Information Systems Systems from a Constituency Perspective • Executive support systems (ESS) • Serve senior managers • Address strategic issues and long-term trends • E.g. What products should we make in 5 years? • • Provide generalized computing capacity that can be applied to changing array of problems • Draw summarized information from MIS, DSS and data from external events • 2.36 Address non-routine decision-making Typically use portal with Web interface to present content Essentials of Business Information Systems Chapter 2 E-Business: How Businesses Use Information Systems Systems That Span the Enterprise Model of an Executive Support System Figure 2-12 This system pools data from diverse internal and external sources and makes them available to executives in an easy-to-use form. 2.37 Essentials of Business Information Systems Chapter 2 E-Business: How Businesses Use Information Systems Types of Business Information Systems Relationship of Systems to One Another • TPS: Major source of data for other systems • ESS: Primarily a recipient of data from lowerlevel systems • Other systems may exchange data as well • Exchange of data between functional areas • E.g. Sales order transmitted to manufacturing system • In most organizations,...
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