Information Systems Building Blocks

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Chapter 2

• Information Systems Building Blocks

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The Big Picture

• 5 Types of Information Systems (IS)
• Framework for Analysis Design
• 4 Organizational Stakeholders (who cares)
• 4 Technology Components (what they care about)

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I. Transaction Processing Systems TPS

• Primary interaction with suppliers, customers,
  employees, etc. - 90
• Respond to business transactions
• Initiate transactions
• Allow data maintenance
• IPO Model
• Measures include
• response time, throughput, accuracy, consistency

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II. Management Information Systems MIS

• Provide information to managers on business
  functions/operations, etc.
• Issue reports to plan, monitor, control
• based on statistical models
• use shared databases
• provide detail, summary, exception rpts

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III. Decision Support Systems DSS

• Help support unstructured decisions
• cannot be predicted
• also called Executive Info Systems
• Provide tools for
• identify decision opportunities
• identify possible solutions
• access to information (data warehouse)
• analysis, simulation, what if? scenarios
• process support

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IV. Expert Systems

• Contains specialized knowledge and expertise that
  is not easily duplicated
• Often contain artificial intelligence technology
• lisp, prolog, smalltalk
• Key component is reasoning ability

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V. Office Information Systems OIS

• A wide range of business activities
• Support improved workflow and communication
• word processing, e-mail, imaging
• Work group scheduling