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Set Operations Quiz Questions and Answers PDF Download eBook p. 313

Practice Set operations quiz questions and answers PDF, set operations MCQ with answers to solve data science worksheet 313 for online past papers exam. Practice Introduction to SQL quiz questions with answers, set operations Multiple Choice Questions (MCQ) for online DBMS, DBA. Free set operations MCQs, constraints in dbms, database languages, nested subqueries, view of data, set operations test prep for computer science programs.

"The result of Boolean expression 'true or unknown' is", set operations Multiple Choice Questions (MCQ) with choices null, false, unknown, and true for online SQL language certification. Learn introduction to sql questions and answers with free online certification courses for information and communication technology.

Quiz on Set Operations PDF Download eBook

Set Operations Quiz

MCQ: The result of Boolean expression 'true or unknown' is

  1. False
  2. Null
  3. Unknown
  4. True

D

View of Data Quiz

MCQ: Database systems have several schemas, partitioned according to the

  1. Data
  2. Constraints
  3. Requirement
  4. Level of abstraction

D

Nested Subqueries Quiz

MCQ: The number of errors in the following subquery is/are
(select salary
from instructor
where dept name=Biology)

  1. 0
  2. 1
  3. 2
  4. 3

B

Database Languages Quiz

MCQ: Query processor component of the database system translates DML queries into sequences of actions at the

  1. Physical Level
  2. Logical Level
  3. View Level
  4. Virtual Level

A

Constraints in DBMS Quiz

MCQ: The difference of entities must be expressed in terms of their

  1. Values
  2. Locators
  3. Size
  4. Attributes

D