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NEW QUESTION 49
You are using buffered queries with PHP mysqli in a browser-based web application. Which three are true?

A. Buffered queries are enabled by default.B. Results are sent to the calling PHP process for buffering.C. Additional queries on the same session are blocked until the result set is released.D. Results are sent from the server to the browser for buffering.E. Buffered queries should be used on large tables when the result size is unknown.F. Buffered queries must be explicitly enabled using mysqliuseresult.G. Large results can have a negative impact on performance.

Answer: E,F,G

 

NEW QUESTION 50
You must reclaim memory used by a prepared statement named prep. Which two achieve this?

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

Answer: A,B

 

NEW QUESTION 51
Examine these statement which execute successfully:

Now, examine this desired output:

Which two queries will produce the out?
A)

B)


D)

E)

A. Option AB. Option CC. Option BD. Option EE. Option D

Answer: B,C

 

NEW QUESTION 52
Examine this statement and output:

Now, examine these desired output values:

Which statement updates the table data as require

A. UPDATE exam_result SET score=CEIL(TRUNCATE(scoB. UPDATE exam_result SET score=ROUND(score,1);C. UPDATE examresult SET score=ROUND(CEIL(scoreD. UPDATE exam_result SET score=TRUNCATEE. UPDATE exam_result SET score=CEIL(ROUND(score,1));F. UPDATE exam_result SET score=TRUNCATE(score,1);

Answer: B

 

NEW QUESTION 53
Examine the appointments table definition which contains one million rows:

Now, examine this statement which executes successfully:

Which statement will improve query performance?

A. ALTER TABLE appointments add index IX_4<attendant_id, payment, credit)B. ALTER TABLE appointments add index IX_1(credit,payment)C. ALTER TABLE appointments add index IX_3(attendant_id, created_by)D. ALTER TABLE appointments add index IX_2(attendant_session_id, created_by)

Answer: A

 

NEW QUESTION 54
......

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