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NEW QUESTION 42
The employee table includes these columns:
e_id INT, e_name VARCHAR (45), dept_id INT salart INT
You must create a stored function, getMaxSalary(), which returns the maximum salary paid for a given department id.
Which statement will create the function?
- A. Option D
- B. Option A
- C. Option C
- D. Option B
NEW QUESTION 43
Examine these statements issued from Session 1 which execute successfully:
Now, examine these statements issued from Session 2 which execute successfully:
UPDATE band SET song=CONCAT (“Here Comes the “, song) WHERE song LIKE ‘ %Sun ; Which two are true?
- A. Session 2 takes an exclusive lock on all the rows in the band table.
- B. Session 1 does not block Session 2.
- C. Statements in Session 2 are committed.
- D. Session 1 must commit before the update in Session 2 can complete.
- E. Session 2 does not start a transaction.
- F. Session 1 takes a shared lock on all the rows in the band table.
NEW QUESTION 44
Which change will prevent negative ages to be inserted into the people table?
- A. ALTER TABLE people ADD CONSTRAINT check_age CHECK (ABS(age)>=0);
- B. DELIMITER //
CREATE TRIGGER agecheck BEFORE INSERT ON people FOR EACH ROW IF NEW. age < 0 THEN SET NEW.age =0; END IF;// DELIMITER ;
- C. ALTER TABLE people ADD COLUMN valid_age=ABS(check_age) GENERATED ALWAYS;
- D. DELIMITER //
CREATE TRIGGER age check AFTER INSERT ON people FOR EACH ROW IF NEW. age < 0 THEN SET NEW.age =0; END IF;// DELIMITER;
NEW QUESTION 45
Which two statements are true about AUTO_INCREMENT?
- A. The decimal data type supports AUTO_INCREMENT.
- B. A table can have multiple AUTO_INCREMENT columns.
- 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 server restart always resets the AUTO_INCREMENT value to largest value in the AUTO_INCREMENT column plus 1.
NEW QUESTION 46