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Oracle Database SQL Sample Questions (Q324-Q329):

NEW QUESTION # 324
View the exhibit and examine the structures of the EMPLOYEESand DEPARTMENTStables.
EMPLOYEES
Name Null? Type
- ---------------- ----- -------------
EMPLOYEE_ID NOT NULL NUMBER(6)
FIRST_NAME VARCHAR2(20)
LAST_NAME NOT NULL VARCHAR2(25)
HIRE_DATE NOT NULL DATE
JOB_ID NOT NULL VARCHAR2(10)
SALARY NUMBER(10,2)
COMMISSION NUMBER(6,2)
MANAGER_ID NUMBER(6)
DEPARTMENT_ID NUMBER(4)
DEPARTMENTS
Name Null? Type
----------------- ----- -------------
DEPARTMENT_ID NOT NULL NUMBER(4)
DEPARTMENT_NAME NOT NULL VARCHAR2(30)
MANAGER_ID NUMBER(6)
LOCATION_ID NUMBER(4)
You want to update EMPLOYEEStable as follows:
Update only those employees who work in Boston or Seattle (locations 2900 and 2700).

Set department_idfor these employees to the department_idcorresponding to London

(location_id 2100).
Set the employees' salary in location_id2100 to 1.1 times the average salary of their department.

Set the employees' commission in location_id2100 to 1.5 times the average commission of their

department.
You issue the following command:
SQL> UPDATE employees
SET department_id
( SELECT department_id
FROM departments
WHERE location_id = 2100),
( salary, commission)
( SELECT 1.1*AVG(salary), 1.5*AVG(commission)
FROM employees, departments
WHERE departments.location_id IN(2900, 2700, 2100))
WHERE department_id IN
( SELECT department_id
FROM departments
WHERE location_id = 2900
OR location_id = 2700;
What is outcome?

A. It generates an error because multiple columns (SALARY, COMMISSION)cannot be specified together in an UPDATEstatement.
B. It executes successfully and gives the desired update
C. It executes successfully but does not give the desired update
D. It generates an error because a subquery cannot have a join condition in a UPDATEstatement.

Answer: C

NEW QUESTION # 325
View the Exhibit and examine the description of the ORDERS table.

A. WHERE order_date > TO_DATE('JUL 10 2006','MON DD YYYY')
B. Which two WHERE clause conditions demonstrate the correct usage of conversion functions? (Choose two.) WHERE order_date_IN ( TO_DATE('OCT 21 2003','MON DD YYYY'), TO_CHAR('NOV 21
C. WHERE TO_CHAR(order_date,'MON DD YYYY') = 'JAN 20 2003'
D. 2003','MON DD YYYY') )
WHERE order_date > TO_CHAR(ADD_MONTHS(SYSDATE,6),'MON DD YYYY')

Answer: A,C

NEW QUESTION # 326
Examine the commands used to create DEPARTMENT_DETAILSand COURSE_DETAILS tables:

You want to generate a list of all department IDs that do not exist in the COURSE_DETAILStable.
You execute the SQL statement:

What is the outcome?

A. It executes successfully and displays the required list.
B. It executes successfully but displays an incorrect list.
C. It fails because the ON clause condition is not valid.
D. It fails because the join type used is incorrect.

Answer: A

Explanation:
Explanation

NEW QUESTION # 327
The user SCOTT who is the owner of ORDERS and ORDER_ITEMS tables issues this GRANT command:
GRANT ALL
ON orders, order_items
TO PUBLIC;
What must be done to fix the statement?

A. ALL should be replaced with a list of specific privileges.
B. WITH GRANT OPTION should be added to the statement.
C. Separate GRANT statements are required for the ORDERS and ORDER_ITEMS tables.
D. PUBLIC should be replaced with specific usernames.

Answer: C

Explanation:
http://docs.oracle.com/javadb/10.8.3.0/ref/rrefsqljgrant.html

NEW QUESTION # 328
Evaluate the following two queries:

Which statement is true regarding the above two queries?

A. Performance would degrade in query 2.
B. Performance would improve in query 2 only if there are null values in the CUST_CREDIT_LIMIT column.
C. There would be no change in performance.
D. Performance would improve in query 2.

Answer: C

NEW QUESTION # 329
......

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