Online Access Free 1z1-909 Practice Test

Examine the employee table structure:

Which set of statements immediately returns empname for a given emp_id by using a parameterized prepare statement?
A)



D)

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

Examine these commands and output:


Which is true about the execution of the insert statement?

• A.It inserts a new row in the base table only.
• B.It inserts a new row in the view only.
• C.It returns an error.
• D.It inserts a row in the view and base table.

Examine this bar graph based on columns from the players table:

Which two statements would generate this bar graph?

• A.SELECT Name, Gender, Sport, CHAR_LENGTH ('# ' GPA*10) AS GPA_Graph FROM players ORDER BY GPA DESC;
• B.SELECT Name, Gender, Sport, LENGTH (GPA*10, '# ') AS GPA_Graph FROM players ORDER BY GPA DESC;
• C.SELECT Name, Gender, Sport, RPAD ('# ' GPA*10) AS GPA_Graph FROM players ORDER BY GPA DESC;
• D.SELECT Name, Gender, Sport, REPEAT('# 'Y GPA*10) AS GPA_Graph FROM players ORDER BY GPA DESC;
• E.SELECT Name, Gender, Sport, CONCAT ('# ' GPA*10) AS GPA_Graph FROM players ORDER BY GPA DESC;

You must write a statement that combines the first_name and last_name columns from the employees table as "last_name, first_name." Which two statements will do this?

• A.SELECT GROUP_CONCAT(last_name, first_name) FROM employees;
• B.SELECT last_name, ' , ',first_name FROM employees;
• C.SELECT last_name + ', ' + first_name FROM employees;
• D.SELECT CONCAT(last name,', ',first_name) FROM employees;
• E.SELECT CONCAT_WS(', ',last_name,first_name) FROM employees;

Examine these statements which execute successfully:

Which two changes will improve this query performance?

• A.CREATE INDEX 1X3 ON locations <loc_site_id) ;
• B.CREATE INDEX 1X7 ON users (user_name) USING HASH;
• C.CREATE INDEX IX1 ON locations (loc_shareci) ;
• D.CREATE INDEX 1X2 ON locations (loc_mapping) USING HASH; fH
• E.CREATE INDEX 1X4 ON Locations (site_id, loc_shared);
• F.CREATE INDEX 1X6 ON users (user_name);
• G.CREATE INDEX 1X5 ON users (loc_id);