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Staab Itp 251 Chapter 8 Swl Case Presentation

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Transcript

  • 1. To the Point
    CH. 8
    System Development and Analysis
    John Staab, CEO
  • 2. SWL Team Tasks
    Concept of Normalization
    Carla’s Design
    ERD
    Third Normal Form
    10 Tasks
    Concurrent Tasks
    Sequential Tasks
  • 3. Concept of Normalization
    Normalization is basically any process of conforming an object to rules and regulations. This can include the removal or errors in repeated data to create a common scale for measurement.
  • 4. Normalization Model
  • 5. Carla’s Design
    Carla’s design contains a repeating group and is therefore “unnormalized”. All of the fields are contained in a single table with a repeating group of six fields.
  • 6. ERD
  • 7. Third Normal Form
    PROJECT (PROJECT-NUMBER, PROJECT-NAME, START-DATE, PROJECT-STATUS)
    EMPLOYEE (EMPLOYEE-NUMBER, EMPLOYEE-NAME, DEPARTMENT-NUMBER, JOB-TITLE)
    PROJECT HOURS (PROJECT-NUMBER, EMPLOYEE-NUMBER, PROJECT-HOURS) 
    DEPARTMENT (DEPARTMENT-NUMBER, DEPARTMENT-NAME)
  • 8. 10 Tasks
    Identify all entities
    Create initial ERD
    Identify Tables
    Design Tables
    Identify Normal Form
    Sample Data
    Normalization
    Final ERD
    Documentation
    Lessons Learned
  • 9. Concurrent Tasks
    Identify all entities
    Identify Tables
    Identify Normal Forms to be used
    Create Sample Data
    Normalization
    Documentation
    Lessons Learned
  • 10. Sequential Tasks
    Create initial ERD (dependant on entity identification)
    Design Tables (dependant of table identification)
    Final ERD (requires initial ERD and normalization)

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