MTI Digital Garden

Entity Types

Oct 30, 20241 min read

Entity Types

Entity types are abstractions that represent real-world objects or concepts that have an independent existence.

Strong Entity Type

  • Physical Entities: Tangible items like Staff, Property, and Product.

  • A Strong Entity Type is an entity that does not rely on any other entity for its existence.

Weak Entity Type

  • Conceptual Entities: Intangible concepts like Sale, Course, or Inspection.

  • A Weak Entity Type is dependent on another entity for its existence. It is represented by a double rectangle in ER diagrams. An example is a Dependent entity type that relies on the Employee entity.

Graph View

Backlinks