Introduction to the Field Project

1
Introduction to the Field Project

• Chapter 1 (Alternate)
• MIS 4663

2
MIS 4663 Website

• http//misfaculty.ou.edu/systems
• Syllabus
• Standards Manual
• Text Chapters
• Assignments
• Lecture Notes

3
The 21st Century Field Environment

• Highly-Competitive Global Economy
• Areas of Competition
• Cost (Near-Perfect Information)
• Customer Service, Rapid Response
• Quality, Performance, Reliability
• Productivity/Cost Goals
• Expanded to White-Collar Workers

4
Reasons for a New Field Project

• The Existing System is lacking
• Our Competitor has It
• The Boss wants It
• New Basic Business Function
• Prepare for the Future

5
Mission-Critical Roles of IS in the Field

• Substitute IS for
• Labor
• Materials
• Productivity Tool
• An End Product

6
Field Applications for System Theory

• Goal
• System - Set of related components to perform one
  or more functions
• Subsystems or Modules
• Boundary
• Environment
• Interfaces

7
IS Component Model
Data Sources
Processes
Data Storage
Environment
Data Sinks
System Boundary
8
IS Content Model
Process (How)
Data (What)
9
Data Process Views

• Process View (How) Chapter 6
• How and when the system does things
• Tends toward frequent change
• Data tailored to Application
• Data View (What) Chapter 5
• Data the system needs to operate
• Lower change rate?
• Enterprise View of Data

10
Add Structure by Using

• Methodologies organized approaches to
  development -- RAD, SDLC
• Techniques processes to produce deliverables --
  DFDs, ERDs, FHD
• Tools computer programs to implement techniques
  -- Designer/2000

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Add Structure to

• Achieve More Consistent Results
• Obtain Better Performance?
• Reduce Maintenance Cost?
• Reduce Labor Cost?
• Reduce Elapsed Time?

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Application Development Approaches

• Just Do It
• Input/Output/File Oriented
• Highly Structured - SLDC
• Flexible - RAD
• Methods/Tools - ERD, DFD, FHD, prototyping

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Systems Development Life Cycle SDLC
Project ID and Selection
R E V I E W R E V I S E
Proj. Initiation Planning
Analysis
Logical Design
Physical Design
Implementation
Maintenance
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SDLC Alternatives

• SDLC may be inflexible
• Try Rapid Application Development
• Client/User Contracts
• Client/User Joint Teams
• Prototyping
• See Chapter 9

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Structuring Development Activities

• Data Structure -- ERD,
• Process Structure -- DFDs, FHD, Repository
• 4GLs
• CASE tools

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Key Inputs for Field Projects

• Behavioral Skills
• Technical Skills
• Business Knowledge
• System Design Concepts, Methods Tools