Anintangible entityis an entity that does not have a physical presence but still holds meaning in a database. These entities representconcepts, relationships, or abstract datathat exist in a logical sense.
Example Usage in Databases:
Customer Loyalty Status (Gold, Silver, Bronze)
Theloyalty levelis anintangible entitysince it is derived from other data (purchase history).
Online User Sessions
Asession IDexistslogically in the systembut does not have a tangible presence like a product or employee.
Why Other Options Are Incorrect:
Option A (Concrete entity) (Incorrect):No such formal term in database design.
Option B (Tangible entity) (Incorrect):Represents somethingphysical, like anemployeeorproduct.
Option D (Physical entity) (Incorrect):Refers todata stored on disk, like database tables or indexes.
Thus, the correct answer isIntangible entity, as it only exists in a logical sense within the database.
Chosen Answer:
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