Multiple choice

Which of the following statements is false regarding ER Model?

  1. It is an abstract way of describing a database.

  2. It uses a three schema approach to software engineering.

  3. Conceptual data model is the lowest level ER model.

  4. An entity is an abstraction from the complexities of a domain.

  5. Entities and relationships can both have attributes.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is the highest level ER model in that it contains the least granular detail but establishes the overall scope of what is to be included within the model set. The conceptual ER model normally defines master reference data entities that are commonly used by the organization.

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