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Relational Model Concepts Cognitive Class Exam Answers:-

Course Name :- Relational Model Concepts

Relational Model Concepts Cognitive Class Final Exam Answers:-

Question 1.Which one of these statements is incorrect?

  • A relational database is a set of relations.
  • A Relation is made up of 2 parts: Relational Schema and Relational Instance.
  • A relational database is a set of relations.
  • None of the above

Question 2.What are the building blocks of the Relational Model?

  • Collections and Items
  • Mathematical model and terms
  • Relations and sets
  • Index and Elements

Question 3.Which one of these statements is incorrect if a relation is made up of 5 tuples?

  • The cardinality of the relation is 5
  • The degree of the relation is 5
  • The relation contains 5 rows
  • None of the above

Question 4. Which one of these statements is correct about Set in relational model concepts?

  • It would have no order and no duplicates.
  • It is a collection of items of the same type.
  • It is an unordered collection of distinct elements.
  • All of the above statements

Question5. Which one of these statements is correct if a relation is made up of 5 attributes?

  • The cardinality of the relation is 5
  • The degree of the relation is 5
  • The relation contains 5 rows
  • All of the above

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