21206131-introduction-to-information-system.ppt

© 2009 Sohail Ahmad

System Analysis and Design

INTRODUCTION TO INTRODUCTION TO INFORMATION INFORMATION

SYSTEMSYSTEM



Essentials of Management Information SystemsEssentials of Management Information SystemsChapter 2 Information Systems in the EnterpriseChapter 2 Information Systems in the Enterprise

Types of Information Systems

KEY SYSTEM APPLICATIONS IN THE ORGANIZATION

Figure 2-1




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 Automation Systems (OAS)Office Automation Systems (OAS)• Transaction Processing Systems (TPS)Transaction Processing Systems (TPS)





TYPES OF INFORMATION SYSTEMS

Figure 2-2





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

Figure 2-3





Types of TPS Systems

Figure 2-4




Knowledge Work Systems (KWS):

Knowledge levelKnowledge level• Inputs:Inputs: Design specsDesign specs• Processing:Processing: ModelingModeling• Outputs:Outputs: Designs, graphicsDesigns, graphics• Users:Users: Technical staffTechnical staff

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






Figure 2-5


Management Information System (MIS)



• 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





Figure 2-6


Decision Support System (DSS)




Figure 2-7


Decision Support System (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






Executive Support System (ESS)

Figure 2-8




• 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)




INTERRELATIONSHIPS AMONG SYSTEMS

Figure 2-9



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


SYSTEMS FROM A FUNCTIONAL PERSPECTIVE

Sales and Marketing Systems




SYSTEM DESCRIPTION ORGANIZATIONAL LEVEL

ORDER PROCESSING ENTER, PROCESS, TRACK ORDERS OPERATIONAL

MARKET ANALYSIS IDENTIFY CUSTOMERS & MARKETS KNOWLEDGE

PRICING ANALYSIS DETERMINE PRICES MANAGEMENT

SALES TRENDS PREPARE 5-YEAR FORECASTS STRATEGIC


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






MACHINE CONTROL CONTROL ACTIONS OF EQUIPMENT OPERATIONAL

COMPUTER-AIDED-DESIGN DESIGN NEW PRODUCTS KNOWLEDGE

PRODUCTION PLANNING DECIDE NUMBER, SCHEDULE OF PRODUCTS MANAGEMENT

FACILITIES LOCATION DECIDE WHERE TO LOCATE FACILITIES STRATEGIC

Manufacturing and Production Systems





Overview of Inventory Systems

Figure 2-10




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






ACCOUNTS RECEIVABLE TRACK MONEY OWED TO FIRM OPERATIONAL

PORTFOLIO ANALYSIS DESIGN FIRM'S INVESTMENTS KNOWLEDGE

BUDGETING PREPARE SHORT TERM BUDGETS MANAGEMENT

PROFIT PLANNING PLAN LONG-TERM PROFITS STRATEGIC

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





TRAINING & DEVELOPMENT TRACK TRAINING, SKILLS, APPRAISALS OPERATIONAL

CAREER PATHING DESIGN EMPLOYEE CAREER PATHS KNOWLEDGE

COMPENSATION ANALYSIS MONITOR WAGES, SALARIES, BENEFITS MANAGEMENT

HUMAN RESOURCES PLANNING PLAN LONG-TERM LABOR FORCE NEEDS STRATEGIC






Figure 2-11





Business processes Business processes

• Manner in which work is organized, Manner in which work is organized, coordinated, and focused to produce a coordinated, and focused to produce a valuable product or servicevaluable product or service

• Concrete work flows of material, Concrete work flows of material, information, and knowledge—sets of information, and knowledge—sets of activitiesactivities


Business Processes and Information Systems

INTEGRATING FUNCTIONS AND BUSINESS PROCESSES





• Unique ways to coordinate work, Unique ways to coordinate work, information, and knowledgeinformation, and knowledge

• Ways in which management chooses Ways in which management chooses to coordinate workto coordinate work







Information systems help organizationsInformation systems help organizations

• Achieve great efficiencies by automating Achieve great efficiencies by automating parts of processes parts of processes

• Rethink and streamline processesRethink and streamline processes



• Manufacturing and production:Manufacturing and production: Assembling product, checking quality, Assembling product, checking quality, producing bills of materialsproducing bills of materials

• Sales and marketing:Sales and marketing: Identifying Identifying customers, creating customer awareness, customers, creating customer awareness, sellingselling


Examples of Business Processes




• Finance and accounting:Finance and accounting: Paying Paying creditors, creating financial statements, creditors, creating financial statements, managing cash accountsmanaging cash accounts

• Human Resources:Human Resources: Hiring employees, Hiring employees, evaluating performance, enrolling evaluating performance, enrolling employees in employees in benefits plansbenefits plans


Examples of Business Processes






Cross-Functional Business ProcessesCross-Functional Business Processes

• Transcend boundary between sales, marketing, Transcend boundary between sales, marketing, manufacturing, and research and developmentmanufacturing, and research and development

• Group employees from different functional Group employees from different functional specialties to a complete piece of workspecialties to a complete piece of work

Example: Order Fulfillment ProcessExample: Order Fulfillment Process





Figure 2-12

The Order Fulfillment Process






Customer Relationship Management (CRM)Customer Relationship Management (CRM)

• Manages all ways used by firms to deal with Manages all ways used by firms to deal with existing and potential new customersexisting and potential new customers

• Business and Technology disciplineBusiness and Technology discipline

• Uses information system to coordinate entire Uses information system to coordinate entire business processes of a firmbusiness processes of a firm

Customer Relationship Management (CRM)





• Provides end-to-end customer careProvides end-to-end customer care

• Provides a unified view of customer Provides a unified view of customer across the companyacross the company

• Consolidates customer data from multiple Consolidates customer data from multiple sources and provides analytical tools for sources and provides analytical tools for answering questionsanswering questions







Figure 2-13





Supply Chain Management (SCM)Supply Chain Management (SCM)• Close linkage and coordination of activities Close linkage and coordination of activities

involved in buying, making, and moving a involved in buying, making, and moving a productproduct

• Integrates supplier, manufacturer, distributor, Integrates supplier, manufacturer, distributor, and customer logistics time and customer logistics time

• Reduces time, redundant effort, and inventory Reduces time, redundant effort, and inventory costscosts

Supply Chain Management (SCM)





Supply ChainSupply Chain

• Network of organizations and business Network of organizations and business processes processes

• Helps in procurement of materials, Helps in procurement of materials, transformation of raw materials into transformation of raw materials into intermediate and finished productsintermediate and finished products






• Helps in distribution of the finished Helps in distribution of the finished products to customersproducts to customers

• Includes reverse logistics - returned items Includes reverse logistics - returned items flow in the reverse direction from the flow in the reverse direction from the buyer back to the sellerbuyer back to the seller






Supply Chain Management

Figure 2-14



• Decide when, what to produce, store, moveDecide when, what to produce, store, move• Rapidly communicate orders Rapidly communicate orders • Communicate orders, track order statusCommunicate orders, track order status• Check inventory availability, monitor levelsCheck inventory availability, monitor levels• Track shipments Track shipments • Plan production based on actual demand Plan production based on actual demand • Rapidly communicate product design changeRapidly communicate product design change• Provide product specificationsProvide product specifications• Share information about defect rates, returnsShare information about defect rates, returns


How Information Systems Facilitate Supply Chain Management


21206131-introduction-to-information-system.ppt

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