What are the Data Model Types?

• Data Models are often categorized by levels of abstraction:

  • Conceptual
    • Shows data through business eyes
  • Logical
    • Adds detail, normalizes relationships
  • Physical
    • Specific to an implementation

• These levels have no agreed formal definitions

  • The different types of Data Models mainly represent different aspects and uses
  • Nevertheless they are helpful to understand, and useful ways to characterize specific Data Models

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