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1Z0-909 - MySQL 8.0 Database Developer Fantastic Certification Training

NEW QUESTION 34 You must reclaim memory used by a prepared statement named prep. Which two achieve this?

  • A. DEALLOCATE PREPARE prep?
  • B. PREPARE prep FROM '';
  • C. DROP PREPARE prep;
  • D. DROP PROCEDURE prep;
  • E. SET @prep = NULL;
  • F. SET @a = ''; EXECUTE prep USING @a;

Answer: D,E   NEW QUESTION 35 Examine these commands and output: Which is true?

  • A. A new view is created because the previous was dropped on execution of the drop table statement.
  • B. It returns an error because the DROP TABLE statement did not drop the view.
  • C. It returns an error because the CREATE TABLE statement automatically recreated the view.
  • D. Existing empvuL is dropped and a new empvu1 created with the new definition.

Answer: B   NEW QUESTION 36 Examine these statement which execute successfully: Now, examine this desired output: Which two queries will produce the out? A) B) D) E)

  • A. Option C
  • B. Option B
  • C. Option A
  • D. Option E
  • E. Option D

Answer: A,B   NEW QUESTION 37 Which two statements are true about AUTO_INCREMENT?

  • A. A server restart always resets the AUTOINCREMENT value to largest value in the AUTOINCREMENT column plus 1.
  • B. The decimal data type supports AUTO_INCREMENT.
  • C. AUTO_INCREMENT values allocated to a transaction that is rolled back are not reused.
  • D. An AUTO_INCREMENT column must be indexed.
  • E. A table can have multiple AUTO_INCREMENT columns.

Answer: C,D   NEW QUESTION 38 How does InnoDB choose deadlock victims in MySQL?

  • A. It chooses the transaction with the most modified rows.
  • B. It chooses the transaction with the fewest modified rows.
  • C. It chooses the transaction randomly.
  • D. It chooses the transaction with the most accumulated CPU time.
  • E. It chooses the transaction with the lowest transaction ID.
  • F. It chooses the transaction with the least accumulated CPU time.

Answer: C   NEW QUESTION 39 ......