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Database Systems Competitive Exam MCQs – Practice Test 5 (Chapter 15)

Introduction to SQL Multiple Choice Questions and Answers PDF – Test 5

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Free Introduction to SQL MCQs App Download: For renaming attributes, the as clause can appear in; MCQ with answers: where clause, select clause, from clause, and both a and c. Solve DBMS for Competitive Exams Quiz Questions, download Google e-Book (Free Chapter) to enhance academic success.

Introduction to SQL MCQs with Answers PDF Download – Test 5

MCQ 21: In result if we want to retain all duplicates, we must write:

  1. Join all operator
  2. Join operator
  3. Union operator
  4. Union all operator

MCQ 22: For renaming attributes, the as clause can appear in:

  1. Select clause
  2. Where clause
  3. From clause
  4. Both A and C

MCQ 23: A floating-point number, with precision can be initialized by type:

  1. float
  2. real precision
  3. double precision
  4. numeric

MCQ 24: The SQL DDL includes the schema for each relation and:

  1. Type of attribute's values
  2. Integrity Constraints
  3. Set of indices
  4. All of the Above

MCQ 25: SQL provides a way of renaming the attributes of a result relation, taking the form:

  1. old-name to new-name
  2. old-name as new-name
  3. ALTER old-name to new-name
  4. ALTER old-name at new-name

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