slide 43

Descriptive versus Prescriptive

• Prescriptive models are used to create new documents
  • Strict rules for organization and sequence
  • Many required elements
  • Data typing specific (dollar-amount, date, time-sequence)
  • Variability restricted
• Descriptive models match existing (potentially diverse) documents
  • Loose rules for organization and sequence
  • Many optional elements
  • Great variability allowed