Describe some of the benefits and advantages of performing logical data modeling.

  • Explain the distinction between logical data modeling and physical database design.
  • Apply a repeatable four-step process for doing logical data modeling
  • Identify the components of a data model, including entities, relationships and attributes.
  • Normalize entities to fifth normal form and select proper unique identifiers (primary keys).
  • Handle complex relationships:
  • Many-to-many
  • Sub-types and super-types
  • Recursive/”Bill of Materials”
  • Document the data model with an Entity/Relationship diagram and walk through portions of a data model with people to validate it.

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Data Modeling eLearning

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