[Free] 2018(Jan) Latesttests Dumpsleader Oracle 1z0-047 Dumps with VCE and PDF Download 31-40

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Oracle Database SQL Expert

Question No: 31

View the Exhibit and examine the description of EMPLOYEES and DEPARTMENTS tables.

You want to display the EMPLOYEE_ID, LAST_NAME, and SALARY for the employees who get the maximum salary in their respective departments. The following SQL statement was written:

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WITH

SELECT employee_id, last_name, salary FROM employees

WHERE (department_id, salary) = ANY (SELECT* FROM dept_max)

dept_max as (SELECT d.department_id, max(salary) FROM departments d JOIN employees j

ON (d. department_id = j. department_id) GROUP BY d. department_id);

Which statement is true regarding the execution and the output of this statement?

  1. The statement would execute and give the desired results.

  2. The statement would not execute because the = ANY comparison operator is used instead of=.

  3. The statement would not execute because the main query block uses the query name before it is even created.

  4. The statement would not execute because the comma is missing between the main query block and the query name.

Answer: C

Question No: 32

Which statement is true regarding synonyms?

  1. Synonyms can be created for tables but not views.

  2. Synonyms are used to reference only those tables that are owned by another user.

  3. A public synonym and a private synonym can exist with the same name for the same table.

  4. The DROP SYNONYM statement removes the synonym, and the status of the table on which the synonym has been created becomes invalid.

Answer: C

Question No: 33

Which two statements are true regarding the EXISTS operator used in the correlated subqueries? (Choose two.)

  1. The outer query stops evaluating the result set of the inner query when the first value is found.

  2. It is used to test whether the values retrieved by the inner query exist in the result of the outer query.

  3. It is used to test whether the values retrieved by the outer query exist in the result set of the inner query.

  4. The outer query continues evaluating the result set of the inner query until all the values in the result set are processed.

Answer: A,C

Question No: 34

Which two statements are true regarding multiple-row subqueries? (Choose two.)

  1. They can contain group functions.

  2. They always contain a subquery within a subquery.

  3. They use the lt; ALL operator to imply less than the maximum.

  4. They can be used to retrieve multiple rows from a single table only.

  5. They should not be used with the NOT IN operator in the main query if NULL is likely to be a part of the result of the subquery.

Answer: A,E

Question No: 35

View the Exhibit and examine the description of the EMPLOYEES table.

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Your company decided to give a monthly bonus of $50 to all the employees who have

completed five years in the company. The following statement is written to display the LAST_NAME,

DEPARTMENT_ID, and the total annual salary:

SELECT last_name, department_id, salary 50*12 quot;Annual Compensationquot; FROM employees WHERE MONTHS_BETWEEN(SYSDATE, hire_date)/12 gt;= 5;

When you execute the statement, the quot;Annual Compensationquot; is not computed correctly. What changes would you make to the query to calculate the annual compensation correctly?

  1. Change the SELECT clause to SELECT last_name, department_id, salary*12 50 quot;Annual Compensationquot;.

  2. Change the SELECT clause to SELECT last_name, department_id, salary (50*12) quot;Annual Compensationquot;.

  3. Change the SELECT clause to SELECT last_name, department_id, (salary 50)*12 quot;Annual Compensationquot;.

  4. Change the SELECT clause to SELECT last_name, department_id, (salary*12) 50 quot;Annual Compensationquot;.

Answer: C

Question No: 36

SCOTT is a user in the database.

Evaluate the commands issued by the DBA: 1 – CREATE ROLE mgr;

  1. – GRANT CREATE TABLE, SELECT

    ON oe. orders TO mgr;

  2. – GRANT mgr, create table TO SCOTT;

Which statement is true regarding the execution of the above commands?

  1. Statement 1 would not execute because the WITH GRANT option is missing.

  2. Statement 1 would not execute because the IDENTIFIED BY lt;passwordgt; clause is missing.

  3. Statement 3 would not execute because role and system privileges cannot be granted together in a single GRANT statement.

  4. Statement 2 would not execute because system privileges and object privileges cannot be granted together in a single GRANT command.

Answer: D

Question No: 37

Evaluate the following SELECT statement and view the Exhibit to examine its output:

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SELECT constraint_name, constraint_type, search_condition, r_constraint_name, delete_rule, status FROM user_constraints WHERE table_name = ORDERS

Which two statements are true about the output? (Choose two.)

  1. In the second column, indicates a check constraint.

  2. The STATUS column indicates whether the table is currently in use.

  3. The R_CONSTRAINT_NAME column gives the alternative name for the constraint.

  4. The column DELETE_RULE decides the state of the related rows in the child table when the corresponding row is deleted from the parent table.

Answer: A,D

Question No: 38

Evaluate the following expression using meta character for regular expression: #39;[AAle|ax.r$]#39;

Which two matches would be returned by this expression? (Choose two.)

  1. Alex

  2. Alax

  3. Alxer

  4. Alaxendar

  5. Alexender

Answer: D,E

Question No: 39

View the Exhibit and examine the data in the DEPARTMENTS tables.

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Evaluate the following SQL statement:

SELECT department_id quot;DEPT_IDquot;, department_name , #39;b#39; FROM departments

WHERE department_id=90 UNION

SELECT department_id, department_name DEPT_NAME, #39;a#39; FROM departments

WHERE department_id=10

Which two ORDER BY clauses can be used to sort the output of the above statement? (Choose two.)

  1. ORDER BY 3;

  2. ORDER BY #39;b#39;;

  3. ORDER BY DEPT_ID;

  4. ORDER BY DEPT NAME;

Answer: A,C

Question No: 40

View the Exhibit and examine the details of the EMPLOYEES table.

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Evaluate the following SQL statements: Statement 1:

SELECT employee_id, last_name, job_id, manager_id FROM employees START WITH employee_id = 101

CONNECT BY PRIOR employee_id = manager_id AND manager_id != 108; Statement 2:

SELECT employee_id, last_name, job_id, manager_id FROM employees

WHERE manager_id != 108 START WITH employee_id = 101

CONNECT BY PRIOR employee_id = manager_id;

Which two statements are true regarding the above SQL statements? (Choose two.)

  1. Statement 2 would not execute because the WHERE clause condition is not allowed in a statement that has the START WITH clause.

  2. The output for statement 1 would display the employee with MANAGERJD 108 and all the employees below him or her in the hierarchy.

  3. The output of statement 1 would neither display the employee with MANAGERJD 108 nor any employee below him or her in the hierarchy.

  4. The output for statement 2 would not display the employee with MANAGERJD 108 but it would display all the employees below him or her in the hierarchy.

Answer: C,D

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