Types 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 SystemsOffice Systems Transaction Processing Systems (TPS)Transaction Processing Systems (TPS)

Major Types of Information System

Transaction Processing Systems (TPS) Basic business systems that serve the operational levelBasic business systems that serve the operational level A computerized system that performs and records the daily routine transactions necessary to the conduct of the businessA computerized system that performs and records the daily routine transactions necessary to the conduct of the business

Payroll TPS

Applications of TPS

Knowledge Work Systems (KWS): Knowledge level Inputs: Design specsInputs: Design specs Processing: ModelingProcessing: Modeling Outputs: Designs, graphicsOutputs: Designs, graphics Users: Technical staff and professionalsUsers: Technical staff and professionals Example: Engineering work station

Management Information System (MIS): Management level Inputs: High-volume dataInputs: High-volume data Processing : Simple modelsProcessing : Simple models Outputs: Summary reportsOutputs: Summary reports Users: Middle managersUsers: Middle managers Example: 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 level Inputs: Low-volume dataInputs: Low-volume data Processing: InteractiveProcessing: Interactive Outputs: Decision analysisOutputs: Decision analysis Users: Professionals, staffUsers: Professionals, staff Example: Contract cost analysis

Voyage Estimating DSS

Executive Support System (ESS) Strategic level Inputs: Aggregate dataInputs: Aggregate data Processing: InteractiveProcessing: Interactive Outputs: ProjectionsOutputs: Projections Users: Senior managersUsers: Senior managers Example: 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: Sales management, market research, promotion, pricing, new productsSales management, market research, promotion, pricing, new products Major application systems: Sales order info system, market research system, pricing systemSales order info system, market research system, pricing system Sales and Marketing Systems

Major functions of systems: Scheduling, purchasing, shipping, receiving, engineering, operationsScheduling, purchasing, shipping, receiving, engineering, operations Major application systems: Materials resource planning systems, purchase order control systems, engineering systems, quality control systemsMaterials resource planning systems, purchase order control systems, engineering systems, quality control systems Manufacturing and Production Systems

Major functions of systems: Budgeting, general ledger, billing, cost accountingBudgeting, general ledger, billing, cost accounting Major application systems: General ledger, accounts receivable, accounts payable, budgeting, funds management systemsGeneral ledger, accounts receivable, accounts payable, budgeting, funds management systems Financing and Accounting Systems

Major functions of systems: Personnel records, benefits, compensation, labor relations, trainingPersonnel records, benefits, compensation, labor relations, training Major application systems: Payroll, employee records, benefit systems, career path systems, personnel training systemsPayroll, employee records, benefit systems, career path systems, personnel training systems Human Resource Systems