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NEW QUESTION 39 What is an advantage of using mysqli in PHP programs rather than using PHP Data Objects (PDO)?

• A. mysqli supports object oriented programming.
• B. mysqli can access databases from other vendors.
• C. mysqli supports non blocking, asynchronous queries.
• D. mysqli includes X DevAPI functions.

Answer: A   NEW QUESTION 40 Examine the output: Which explain command will obtain the output?

• A. EXPLAIN PORMAT^TRADITIONAL
• B. EXPLAIN ANALYZE
• C. EXPLAIN PARTITIONS
• D. EXPLAIN PORMAT=JSON
• E. EXPLAIN FORMAT=TREE

Answer: C   NEW QUESTION 41 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 lowest transaction ID.
• C. It chooses the transaction with the fewest modified rows.
• D. It chooses the transaction with the least accumulated CPU time.
• E. It chooses the transaction randomly.
• F. It chooses the transaction with the most accumulated CPU time.

Answer: E   NEW QUESTION 42 Which select statement returns true?

• A. SELECT NULL <> NULL;
• B. SELECT NULL <=> NULL;
• C. SELECT NULL = NULL;
• D. SELECT NULL := NULL;

Answer: B   NEW QUESTION 43 ......