1z0-047 | Renew 1z0-047 Exam Study Guides With New Update Exam Questions
Q11. View the Exhibit and examine the data in EMP and DEPT tables.
In the DEPT table, DEPTNO is the PRIMARY KEY.
In the EMP table, EMPNO is the PRIMARY KEY and DEPTNO is the FOREIGN KEY referencing the DEPTNO column in the DEPT table.
What would be the outcome of the following statements executed in the given sequence?
DROP TABLE emp;
FLASHBACK TABLE emp TO BEFORE DROP;
INSERT INTO emp VALUES (2,COTT 10); INSERT INTO emp VALUES (3,ING 55);
A. Both the INSERT statements would fail because all constraints are automatically retrieved when the table is flashed back.
B. Both the INSERT statements would succeed because none of the constraints on the table are automatically retrieved when the table is flashed back.
C. Only the first INSERT statement would succeed because all the constraints except the primary key constraint are automatically retrieved after a table is flashed back.
D. Only the second INSERT statement would succeed because all the constraints except referential integrity constraints that reference other tables are retrieved automatically after the table is flashed back.
Answer: D
Q12. Evaluate the following statement:
CREATE TABLE bonuses(employee_id NUMBER, bonus NUMBER DEFAULT 100);
The details of all employees who have made sales need to be inserted into the BONUSES table. You can obtain the list of employees who have made sales based on the SALES_REP_ID column of the ORDERS table.
The human resources manager now decides that employees with a salary of $8,000 or less should receive a bonus. Those who have not made sales get a bonus of 1% of their salary. Those who have made sales get a bonus of 1 % of their salary and also a salary increase of 1 %. The salary of each employee can be obtained from the EMPLOYEES table.
Which option should be used to perform this task most efficiently?
A. MERGE
B. Unconditional INSERT
C. ConditionalALLINSERT
D. Conditional FIRST INSERT
Answer: A
Q13. View the Exhibit and examine the description of the PRODUCT_INFORMATION table.
You want to display the expiration date of the warranty for a product. Which SQL statement would you execute?
A. SELECT product_id, SYSDATE + warranty_period FROM product_information;
B. SELECT product_id, TO_YMINTERVAL(warranty_period) FROM product_information;
C. SELECT product_id, TO_YMINTERVAL(SYSDATE) + warranty_period FROM product_information;
D. SELECT product_id, TO_YMINTERVAL(SYSDATE + warranty_period) FROM product_information;
Answer: A
Q14. Which SQL statement would display the view names and definitions of all the views owned by you?
A. SELECTviewjiame, text FROM user_view;
B. SELECTviewjiame, text FROM user_object;
C. SELECTviewjiame, text FROM user_objects;
D. SELECTview_name, text FROM user views;
Answer: D
Q15. Which two statements best describe the benefits of using the WITH clause? (Choose two.)
A. It enables users to store the results of a query permanently.
B. It enables users to store the query block permanently in the memory and use it to create complex queries.
C. It enables users to reuse the same query block in a SELECT statement, if it occurs more than once in a complex query.
D. It can improve the performance of a large query by storing the result of a query block having the WITH clause in the user's temporary tablespace.
Answer: CD
Q16. View the Exhibit and examine DEPARTMENTS and the LOCATIONS tables.
Evaluate the following SOL statement:
SELECT location_id, city FROM locations I WHERE NOT EXISTS (SELECT location_id FROM departments WHERE location_id <> I. location_id);
This statement was written to display LOCATION_ID and CITY where there are no departments located. Which statement is true regarding the execution and output of the command?
A. The statementwouldexecute andwouldreturn the desired results.
B. Thestatement wouldnotexecute becausethe= comparison operatorismissing in the WHERE clause of theouterquery.
C. Thestatement wouldexecutebutitwillreturnzerorows because the WHERE clause intheinner query shouldhavethe= operatorinstead of <>.
D. The statement wouldnot execute because the WHERE clause in the outer query is missing the column name for comparison with the inner query result.
Answer: C
Q17. Which three statements are true? (Choose three.)
A. Only one LONG column can be used per table.
B. ATIMESTAMP data type column stores only time values with fractional seconds.
C. The BLOB data type column is used to store binary data in an operating system file.
D. The minimum column width that can be specified for a varchar2 data type column is one.
E. The value for a CHAR data type column is blank-padded to the maximum defined column width.
Answer: ADE
Q18. Which two statements are true regarding the GROUP BY clause in a SQL statement? (Choose two.)
A. You can use column alias in the GROUP BY clause.
B. Using the WHERE clause after the GROUP BY clause excludes the rows after creating groups.
C. The GROUP BY clause is mandatory if you are using an aggregate function in the SELECT clause.
D. Using the WHERE clause before the GROUP BY clause excludes the rows before creating groups.
E. If the SELECT clause has an aggregate function, then those individual columns without an aggregate function in the SELECT clause should be included in the GROUP BY clause.
Answer: DE
Q19. Which two statements are true? (Choose two.)
A. The USER_SYNONYMSviewcan provide information about private synonyms.
B. The user SYSTEM owns all the base tables and user-accessible views of the data dictionary.
C. All the dynamic performance views prefixed with V$ are accessible to all the database users.
D. The USER_OBJECTS view can provide information about the tables and views created by the user only.
E. DICTIONARY is a view thatcontains thenamesof allthe datadictionary views that theuser can access.
Answer: AE
Q20. View the Exhibit and examine the description of the PRODUCT_INFORMATION table.
SELECT product_name, list_price, min_price, list_price - min_price Difference FROM product_information
Which options when used with the above SQL statement can produce the sorted output in ascending order of the price difference between LIST_PRICE and MIN_PRICE? (Choose all that apply.)
A. ORDERBY4
B. ORDER BY MIN_PRICE
C. ORDER BY DIFFERENCE
D. ORDER BY LIST_PRICE
E. ORDERBYLIST_PRICE–MIN_PRICE
Answer: ACE