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Database Systems Competitive Exam MCQs – Practice Test 5 (Chapter 22)

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Free SQL Interview Questions and Answers MCQs App Download: In the select evaluation of insertion, if the relation did not have a primary key constraint, the problem encountered would be of; MCQ with answers: integration, consistency, syntax, and redundancy. Solve Data Storage and Querying Quiz Questions, download Google e-Book (Free Chapter) to improve database management.

SQL Interview Questions and Answers MCQs – Practice Test 5 PDF Download

MCQ 21: Relational database products have special 'bulk loader' utilities to insert a:

  1. Set of tuples into a relation
  2. Large set of tuples into a relation
  3. Small set of tuples into a relation
  4. Set of large tuples into a relation

MCQ 22: In the select evaluation of insertion, if the relation did not have a primary key constraint, the problem encountered would be of:

  1. Consistency
  2. Integration
  3. Syntax
  4. Redundancy

MCQ 23: Scalar subqueries are useful in SQL update statements, where they can be used in the:

  1. Select clause
  2. From clause
  3. Where clause
  4. Set clause

MCQ 24: The command for increase in annual salary are being made, and salaries of all instructors are to be increased by 5 percent, would be:

  1. update instructor
    set salary=salary * 1.05;
  2. update instructor
    set salary=salary * .05;
  3. update into instructor
    set salary=salary * .05;
  4. update to instructor
    set salary=salary * 1.05;

MCQ 25: The simplest insert statement is a request to insert:

  1. One attribute
  2. One tuple
  3. One variable
  4. One instance

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