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Aggregate Functions Quiz Questions and Answers 75 PDF Book Download

Aggregate functions quiz, aggregate functions MCQs answers, database management quiz 75 to learn data analytics courses online. Introduction to sql quiz questions and answers, aggregate functions multiple choice questions (MCQ) to practice dbms test with answers for college and university courses. Learn aggregate functions MCQs, transformation of relational expressions, lock based protocols, indexing in dbms, aggregate functions test prep for data science certification.

Learn aggregate functions test with multiple choice question (MCQs): aggregate functions are functions that take a set or multiset of values as input and return, with choices single value, multiple sets , multiple attributes, and a relation for bachelor of computer science. Learn introduction to sql questions and answers for scholarships exams' problem-solving, assessment test for data analytics certification.

Quiz on Aggregate Functions Worksheet 75Quiz Book Download

Aggregate Functions Quiz

MCQ: Aggregate functions are functions that take a set or multiset of values as input and return

  1. Single value
  2. Multiple sets
  3. Multiple attributes
  4. A relation

A

Indexing in DBMS Quiz

MCQ: Indexing technique should perform types of access that are supported

  1. Efficiently
  2. Minimum
  3. Maximum
  4. Specifically

A

Lock Based Protocols Quiz

MCQ: A two-phase locking protocol variant that requires that all locks be held until transaction commit is called

  1. Lock-point two-phase locking protocol
  2. Deadlock two-phase locking protocol
  3. Strict two-phase locking protocol
  4. Rigorous two-phase locking protocol

D

Transformation of Relational Expressions Quiz

MCQ: Operations of Natural-join are

  1. Commutative
  2. Associative
  3. Distributive
  4. Conjunctive

B

Database Users and Administrators Quiz

MCQ: Ensuring enough free disk space availability for normal operations, are goals to be achieved by

  1. Database Manager
  2. Database system
  3. Database administrator
  4. Database users

C