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Database Systems MCQs – Practice Test 6 (Chapter 15)

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Learn Database Systems MCQ App (Android & iOS) with MCQ: "Asterisk symbol '*' is used to denote all the attributes in a relation, and is used in"; with answers: define clause, select clause, from clause, and where clause. Practice View of Data Quiz Questions, download Apple Book (Free Chapter) to improve database careers.

Introduction to SQL MCQ – Practice Test 6 PDF Download

MCQ 26: The Asterisk symbol '*' is used to denote all the attributes in a relation, and is used in:

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

MCQ 27: Performing all the tests before performing any deletion is:

  1. Important
  2. Optional
  3. Complex
  4. Irrational

MCQ 28: SQL standard says that the sum operator should ignore an input of:

  1. 0s
  2. 1s
  3. Null value
  4. strings

MCQ 29: The groups that do not satisfy the having clause predicate are:

  1. Applied
  2. Removed
  3. Retrieved accordingly
  4. Not retrieved

MCQ 30: Scalar subqueries can occur in:

  1. Select clause
  2. From clause
  3. Where clause
  4. All of the Above

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