Database Keys MCQs Quiz Online PDF Book Download

Database keys multiple choice questions (MCQs), database keys quiz answers to learn CS courses for online data analyst degree. Introduction to rdbms MCQs with answers, database keys quiz questions and answers for online schools for computer science degree. Learn relational query languages, database schema, structure of relational model, database keys test prep for data science certification.

Learn introduction to rdbms test MCQs: a set of one or more attributes that collectively, allow us to identify uniquely a tuple in relation, is known as, with choices unique key, special key, super key, and primary key for online schools for computer science degree. Practice merit scholarships assessment test, online learning database keys quiz questions for competitive assessment in computer science major .

MCQ on Database Keys Quiz Book Download

MCQ: A set of one or more attributes that collectively, allow us to identify uniquely a tuple in relation, is known as

  1. Unique key
  2. Special key
  3. Super key
  4. Primary key

C

MCQ: No two tuples in a relation are allowed to have exactly same value for

  1. Some attributes
  2. All attributes
  3. Some tuple
  4. All tuples

B

MCQ: Specifying tuples within a given relation, are expressed in terms of the

  1. Attributes
  2. Variables
  3. Function
  4. Domain

A

MCQ: A superkey may contain extraneous

  1. Attributes
  2. Keys
  3. Instances
  4. Entries

A

MCQ: Values of attribute values of a tuple must be such that they can uniquely identify the

  1. Instance
  2. Entity
  3. Relation
  4. Tuple

D