Database Modeling with ER Model

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Questions and Answers

Which one of the following best describes an entity in a database?

  • A collection of attributes
  • A set of entities of the same type that share the same properties
  • An object that exists and is distinguishable from other objects (correct)
  • A mathematical relation among entities

Which one of the following is an example of an entity set?

  • A set of all persons (correct)
  • A customer's name and address
  • A relationship between entities
  • A specific person

What is a relationship set in a database?

  • A collection of attributes
  • A set of entities of the same type
  • An association among several entities (correct)
  • A mathematical relation among entities

What is an example of a relationship in a database?

<p>A depositor relationship between a customer and an account (D)</p> Signup and view all the answers

How can a database be modeled?

<p>As a collection of entities and relationships (A)</p> Signup and view all the answers

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