Database Keys MCQs & Quiz Online PDF Book Download

Database keys MCQs, database keys quiz answers to learn data analytics courses online. Introduction to rdbms multiple choice questions (MCQs), database keys quiz questions and answers for online software engineering programs. 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 software engineering programs. Practice assessment test for scholarships, online learning database keys quiz questions for competitive assessment in computer science major for data science certification.

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