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Database Systems MCQs (Computer Science) From Textbook

Database Systems Exam MCQs – Practice Test 28 (Chapter 21)

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SQL Concepts and Queries MCQs – Practice Test 28 PDF Download

MCQ 136: The data type that allows computations based on dates and times and on intervals, is known to be:

  1. Interval
  2. Instances
  3. timestamp
  4. Default

MCQ 137: SQL provides large-object data types for:

  1. Character data
  2. Binary data
  3. Numeric data
  4. Both A and B

MCQ 138: Any database modification that would cause a null to be inserted in an attribute declared to be not null generates an:

  1. Exception
  2. Rejection
  3. Output
  4. Error

MCQ 139: The letter lob in blob and clob stands for:

  1. Large object
  2. Linear object
  3. Line object
  4. Letter object

MCQ 140: Taking the instructor's relation into account, the integrity constraint ensures that no two instructors have the:

  1. Same Instructor Name
  2. Same Instructor course
  3. Same instructor ID
  4. No multiple transaction

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