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Types of Information SystemTypes of Information System
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Kind of Information System Requirements
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Major Types of Systems
• Executive Support Systems (ESS)Executive Support Systems (ESS)
• Decision Support Systems (DSS)Decision Support Systems (DSS)
• Management Information Systems (MIS)Management Information Systems (MIS)
• Knowledge Work Systems (KWS)Knowledge Work Systems (KWS)
• Office Systems Office Systems
• Transaction Processing Systems (TPS)Transaction Processing Systems (TPS)
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Major Types of Information System
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Transaction Processing Systems (TPS)Transaction Processing Systems (TPS)
• Basic business systems that serve the Basic business systems that serve the operational leveloperational level
• A computerized system that performs and A computerized system that performs and records the daily routine transactions records the daily routine transactions necessary to the conduct of the businessnecessary to the conduct of the business
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Payroll TPS
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Applications of TPS
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Knowledge Work Systems (KWS):
Knowledge levelKnowledge level• Inputs:Inputs: Design specsDesign specs
• Processing:Processing: ModelingModeling
• Outputs:Outputs: Designs, graphicsDesigns, graphics
• Users:Users: Technical staff and professionalsTechnical staff and professionals
Example: Engineering work stationExample: Engineering work station
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Management Information System (MIS):
Management levelManagement level• Inputs:Inputs: High-volume data High-volume data
• ProcessingProcessing:: Simple models Simple models
• Outputs:Outputs: Summary reports Summary reports
• Users:Users: Middle managers Middle managers
Example: Annual budgetingExample: Annual budgeting
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Relationship Between MIS and TPS
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• Structured and semi-structured decisionsStructured and semi-structured decisions
• Report control orientedReport control oriented
• Past and present dataPast and present data
• Internal orientationInternal orientation
• Lengthy design processLengthy design process
Management Information System (MIS)
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Decision Support System (DSS)
Management levelManagement level• Inputs:Inputs: Low-volume data Low-volume data
• Processing: Processing: InteractiveInteractive
• Outputs:Outputs: Decision analysis Decision analysis
• Users:Users: Professionals, staff Professionals, staff
Example: Contract cost analysisExample: Contract cost analysis
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Voyage Estimating DSS
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Executive Support System (ESS)
Strategic levelStrategic level• Inputs:Inputs: Aggregate data Aggregate data
• Processing:Processing: Interactive Interactive
• Outputs:Outputs: Projections Projections
• Users:Users: Senior managers Senior managers
Example: 5-year operating planExample: 5-year operating plan
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Model of Typical ESS
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• Top level managementTop level management
• Designed to the individualDesigned to the individual
• Ties CEO to all levelsTies CEO to all levels
• Very expensive to keep upVery expensive to keep up
• Extensive support staffExtensive support staff
Executive support system (ESS)
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Inter-relationship among Systems
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Major functions of systems:Major functions of systems:• Sales management, market research, Sales management, market research,
promotion, pricing, new productspromotion, pricing, new products
Major application systems:Major application systems:• Sales order info system, market research Sales order info system, market research
system, pricing systemsystem, pricing system
Sales and Marketing Systems
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Sales and Marketing Systems
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Major functions of systems:Major functions of systems:• Scheduling, purchasing, shipping, Scheduling, purchasing, shipping,
receiving, engineering, operationsreceiving, engineering, operations
Major application systems:Major application systems:• Materials resource planning systems, Materials resource planning systems,
purchase order control systems, purchase order control systems, engineering systems, quality control engineering systems, quality control systemssystems
Manufacturing and Production Systems
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Manufacturing and Production Systems
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Major functions of systems:Major functions of systems:• Budgeting, general ledger, billing, cost Budgeting, general ledger, billing, cost
accountingaccounting
Major application systems:Major application systems:• General ledger, accounts receivable, General ledger, accounts receivable,
accounts payable, budgeting, funds accounts payable, budgeting, funds management systemsmanagement systems
Financing and Accounting Systems
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Financing and Accounting Systems
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Major functions of systems:Major functions of systems:• Personnel records, benefits, Personnel records, benefits,
compensation, labor relations, trainingcompensation, labor relations, training
Major application systems:Major application systems:• Payroll, employee records, benefit Payroll, employee records, benefit
systems, career path systems, personnel systems, career path systems, personnel training systemstraining systems
Human Resource Systems
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Human Resource Systems