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Database Systems Exam MCQs – Practice Test 44 (Chapter 15)

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Free "Introduction to SQL Study" App Download with MCQ: Command that retains relation say "r", but deletes all tuples in r, is; with answers: eliminate command, abort command, delete command, and drop command. Practice Relational Algebra Quiz Questions, download Kobo e-Book (Free Chapter) for virtual database coursework.

Introduction to SQL MCQs – Practice Test 44 PDF Download

MCQ 216: The command that retains relation say "r", but deletes all tuples in r, is:

  1. Abort command
  2. Eliminate command
  3. Delete command
  4. Drop command

MCQ 217: Each type may include a special value called the:

  1. Real value
  2. Duplicate value
  3. Null value
  4. Float value

MCQ 218: The predicate in the where clause is applied on the result relation of the from clause, if the:

  1. Where clause is present
  2. Where clause is not present
  3. Select clause is present
  4. Select clause is not present

MCQ 219: A list of the relations to be accessed in the evaluation of the query, with the clause:

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

MCQ 220: The from clause is a list of the relations to be:

  1. Stored
  2. Viewed
  3. Inserted
  4. Accessed

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