Types of Information SystemTypes of Information System

Kind of Information System Requirements

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)

Major Types of Information System

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

Payroll TPS

Applications of TPS

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

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

Relationship Between MIS and TPS

• 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)

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

Voyage Estimating DSS

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

Model of Typical ESS

• 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)

Inter-relationship among Systems

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

Sales and Marketing Systems

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

Manufacturing and Production Systems

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

Financing and Accounting Systems

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

Human Resource Systems