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質問 # 116
Examine the commands used to create DEPARTMENT_DETAILSand COURSE_DETAILS tables:
You want to generate a list of all department IDs along with any course IDs that may have been assigned to them.
Which SQL statement must you use?
SELECT d.department_id, c.course_id FROM department_details d RIGHT OUTER
- A. department_details d ON (c.department_id=d. department_id);
SELECT d.department_id, c.course_id FROM department_details d RIGHT OUTER - B. JOIN course_details c ON (d.department_id=c. department_id);
SELECT d.department_id, c.course_id FROM department_details d LEFT OUTER - C. JOIN course_details c ON (c.department_id=d. department_id);
- D. JOIN course_details c ON (d.department_id=c. department_id);
SELECT d.department_id, c.course_id FROM course_details c LEFT OUTER JOIN
正解：D
質問 # 117
Which two statements are true regarding roles? (Choose two.)
- A. The REVOKE command can be used to remove privileges but not roles from other users.
- B. A role can be granted to PUBLIC.
- C. Roles are named groups of related privileges that can be granted to users or other roles.
- D. A role can be granted to itself.
- E. A user can be granted only one role at any point of time.
正解：B、C
質問 # 118
Which statement will execute successfully?
- A. SELECT 1, 2 FROM DUAL
UNION
SELECT 3, 4 FROM DUAL
ORDER BY 1, 2; - B. SELECT 3 FROM DUAL
UNION
SELECT 4 FROM DUAL
ORDER BY 3 ; - C. SELECT 1, 2 FROM DUAL
UNION
SELECT 3, 4 FROM DUAL
ORDER BY 3, 4; - D. SELECT 1 FROM DUAL
UNION
SELECT 2 FROM DUAL
ORDER BY 1, 2;
正解：A
質問 # 119
Evaluate the following query:
Which is the correct output of the above query?
- A. +00-300, +54-02,+00 11:12:10.123457
- B. +25-00, +54-02, +00 11:12:10.123457
- C. +25-00,+00-650,+00 11:12:10.123457
- D. +00-300,+00-650,+00 11:12:10.123457
正解：B
質問 # 120
Which two are true about transactions In the Oracle Database?
- A. DDL statements automatically commit only data dictionary updates caused by executing the DDL
- B. A DDL statement Issued by a session with an uncommitted transaction automatically commits that transaction.
- C. A session can see uncommitted updates made by the same user In a different session.
- D. DML statements always start new transactions.
- E. An uncommitted transaction Is automatically committed when the user exits SQ1 -Plus.
正解：C、E
質問 # 121
Evaluate the following ALTER TABLEstatement:
ALTER TABLE orders
SET UNUSED (order_date);
Which statement is true?
- A. ROLLBACKcan be used to get back the ORDER_DATEcolumn in the ORDERStable.
- B. The ORDER_DATEcolumn should be empty for the ALTER TABLEcommand to execute succsessfully.
- C. After executing the ALTER TABLEcommand, you can add a new column called ORDER_DATEto the ORDERStable.
- D. The DESCRIBEcommand would still display the ORDER_DATEcolumn.
正解：C
質問 # 122
View the Exhibit and examine the structure of the BOOKS table.
The BOOKS table contains details of 100 books.
Examine the commands executed and their outcome:
Which statement is true?
- A. The first rollback restores the 100 rows that were deleted and the second rollback commits only the changes.
- B. The first rollback restores the 101 rows that were deleted and the second rollback causes the row was inserted to be deleted and commits the changes.
- C. Both ROLLBACK commands restore the 100 rows that were deleted.
- D. Both ROLLBACK commands restore the 101 rows that were deleted.
正解：B
質問 # 123
View the Exhibit and examine the structure of the CUSTOMERS and CUST_HISTORY tables.
The CUSTOMERS table contains the current location of all currently active customers.
The CUST_HISTORY table stores historical details relating to any changes in the location of all current as well as previous customers who are no longer active with the company.
You need to find those customers who have never changed their address.
Which SET operator would you use to get the required output?
- A. MINUS
- B. INTERSECT
- C. UNION ALL
- D. UNION
正解：A
質問 # 124
Which three statements are true about inner and outer joins? (Choose three.)
- A. A full outer join must use Oracle syntax
- B. An inner join returns matched rows
- C. Outer joins can only be used between two per query
- D. A full outer join returns matched and unmatched rows
- E. Outer joins can be used when there are multiple join conditions on two tables
- F. A left or right outer join returns only unmatched rows
正解：B、D、F
解説：
Explanation/Reference: https://www.studytonight.com/dbms/joining-in-sql.php
質問 # 125
Examine the structure of the BOOKS_TRANSACTIONS table:
Examine the SQL statement:
Which statement is true about the outcome?
- A. It displays details for members who have borrowed before today's date with either RM as TRANSACTION_TYPEor MEMBER_IDas A101 and A102.
- B. It displays details for members who have borrowed before today with RM as TRANSACTION_TYPEand the details for members A101 or A102.
- C. It displays details for only members A101 and A102 who have borrowed before today with RM TRANSACTION_TYPE.
- D. It displays details only for members who have borrowed before today with RM as TRANSACTION_TYPE.
正解：B
質問 # 126
You issued this command:
CHOOSE THREE
SQL > DROP TABLE employees;
Which three statements are true?
- A. If there is an uncommitted transaction in the session, it is committed.
- B. All indexes and constraints defined on the table being dropped are also dropped.
- C. The EMPLOYEES table can be recovered using the ROLLBACK command.
- D. The EMPLOYEES table may be moved to the recycle bin.
- E. The space used by the EMPLOYEES table is always reclaimed immediately.
- F. Sequences used in the EMPLOYEES table become invalid.
正解：A、B、D
質問 # 127
You want to display the date for the first Monday of the next month and issue the following command:
What is the outcome?
- A. In generates an error because rrrrshould be replaced by rrin the format string.
- B. It executes successfully but does not return the correct result.
- C. In generates an error because fmand double quotation marks should not be used in the format string.
- D. In generates an error because TO_CHARshould be replaced with TO_DATE.
- E. It executes successfully and returns the correct result.
正解：E
質問 # 128
Examine the structure of the PROGRAMStable:
Which two SQL statements would execute successfully?
SELECT NVL(ADD_MONTHS(END_DATE,1)SYSDATE)
- A. FROM programs;
SELECT TO_DATE(NVL(SYSDATE-END_DATE,SYSDATE)) - B. FROM programs;
- C. FROM programs;
SELECT NVL(MONTHS_BETWEEN(start_date,end_date),'Ongoing') - D. FROM programs;
SELECT NVL(TO_CHAR(MONTHS_BETWEEN(start-date,end_date)),'Ongoing')
正解：B、C
質問 # 129
Examine the data in the NEW_EMPLOYEES table:
Update existing employee details in the EMPLOYEES table with data from the NEW_EMPLOYEES table.
2. Add new employee details from the NEW_EMPLOYEES table to the EMPLOYEES table.
Which statement will do this?
A)
B)
C)
D)
- A. Option B
- B. Option D
- C. Option C
- D. Option A
正解：C
質問 # 130
View the Exhibit and examine the description of the ORDERS table. (Choose two.) Which two WHERE clause conditions demonstrate the correct usage of conversion functions?
- A. WHERE Order_date_IN ( TO_DATE('OCT 21 2003', 'MON DD YYYY'), TO_CHAR('NOV
21 2003', 'MON DD YYYY') ) - B. WHERE Order_date > TO_CHAR(ADD_MONTHS(SYSDATE, 6), 'MON DD YYYY')
- C. WHERE Order_date > ( TO_DATE('JUL 10 2006', 'MON DD YYYY')
- D. WHERE TO_CHAR(Order_date, 'MON DD YYYY') = 'JAN 20 2003'
正解：C、D
質問 # 131
Examine this list of queries:
1. SELECT ROUND (TRUNC (15, 193, 1)) ''Results'' FROM DUAL;
2. SELECT ROUND (15, 193, 1)) ''Results'' FROM DUAL;
3. SELECT (TRUNC (15, 193, 1)) ''Results'' FROM DUAL;
4. SELECT ROUND (ROUND (15. 193, 1)) ''Results'' FROM DUAL;
Which two statements are true?
- A. 1 and 4 give the same result.
- B. 3 returns an error.
- C. 1 and 4 give different results.
- D. 2 returns the value 20.
- E. 2 and 3 give the same result.
正解：C、D
質問 # 132
Which two statements are true regarding roles? (Choose two.)
- A. The REVOKE command can be used to remove privileges but not roles from other users.
- B. A role can be granted to PUBLIC.
- C. Roles are named groups of related privileges that can be granted to users or other roles.
- D. A role can be granted to itself.
- E. A user can be granted only one role at any point of time.
正解：B、C
解説：
http://docs.oracle.com/cd/E25054_01/network.1111/e16543/authorization.htm#autoId28
質問 # 133
View the exhibit and examine the data in ORDERS_MASTER and MONTHLY_ORDERS tables.
Evaluate the following MERGE statement:
MERGE_INTO orders_master o
USING monthly_orders m
ON (o.order_id = m.order_id)
WHEN MATCHED THEN
UPDATE SET o.order_total = m.order_total
DELETE WHERE (m.order_total IS NULL)
WHEN NOT MATCHED THEN
INSERT VALUES (m.order_id, m.order_total);
What would be the outcome of the above statement?
- A. The ORDERS_MASTER table would contain the ORDER_IDs 1, 2, 3 and 4.
- B. The ORDERS_MASTER table would contain the ORDER_IDs 1, 2 and 4.
- C. The ORDERS_MASTER table would contain the ORDER_IDs 1 and 2.
- D. The ORDERS_MASTER table would contain the ORDER_IDs 1, 2 and 3.
正解：B
解説：
https://docs.oracle.com/cd/B28359_01/server.111/b28286/statements_9016.htm
質問 # 134
View the Exhibit and examine the structure of the EMP table which is not partitioned and not an index-organized table. (Choose two.)
Evaluate this SQL statement:
ALTER TABLE emp
DROP COLUMN first_name;
Which two statements are true?
- A. The FIRST_NAME column would be dropped provided at least one column remains in the table.
- B. The FIRST_NAME column can be dropped even if it is part of a composite PRIMARY KEY provided the CASCADE option is added to the SQL statement.
- C. The FIRST_NAME column would be dropped provided it does not contain any data.
- D. The drop of the FIRST_NAME column can be rolled back provided the SET UNUSED option is added to the SQL statement.
正解：A
質問 # 135
Evaluate these commands which execute successfully:
Which two statements are true about the ORD_ITEMS table and the ORD_SEQ sequence?
- A. Sequence ORD_SEQ cycles back to 1 after every 5000 numbers and can cycle 20 times.
- B. Sequence ORD_SEQ is guaranteed not to generate duplicate numbers.
- C. Any user inserting rows into table ORD_ITEMS must have been granted access to sequence ORD_SEQ.
- D. Column ORD_NO gets the next number from sequence ORD_SEQ whenever a row is inserted into ORD_ITEMS and no explicit value is given for ORD_NO.
- E. If sequence ORD_SEQ is dropped then the default value for column ORD_NO will be NULL for rows inserted into ORD_ITEMS.
正解：B、C
質問 # 136
Which three are true about scalar subquery expressions?
- A. They can be used as default values for columns in a create table statement.
- B. They cannot be used in group by clauses.
- C. They can be nested.
- D. They cannot be used in the values clause of an insert statement*
- E. A scalar subquery expression that returns zero rows evaluates to zoro
- F. A scalar subquery expression that returns zero rows evaluates to null.
正解：B、C、F
質問 # 137
View the Exhibit and examine the structure of ORDERS and CUSTOMERS tables. (Choose the best answer.)
You executed this UPDATE statement:
Which statement is true regarding the execution?
- A. It would not execute because two tables cannot be referenced in a single UPDATE statement.
- B. It would not execute because a subquery cannot be used in the WHERE clause of an UPDATE statement.
- C. It would execute and restrict modifications to the columns specified in the SELECT statement.
- D. It would not execute because a SELECT statement cannot be used in place of a table name.
正解：C
質問 # 138
View the Exhibits and examine PRODUCTS and SALES tables.
You issue the following query to display produce name and the number of times the product has been sold:
SQL>SLECT p. PROD_name, i . item _cnt
FROM (SELECT prod_id =, count (*) item_cnt
FROMm sales
GROUP BY prod_id) I RIGHT OUTER JION products p
On i. prod _id =.prod_id;
What happens when the above statement is executed?
- A. The statement produce an error because a subquery in the FROM clause and outer-jions cannot be together.
- B. the statement executes successfully and produces the required output.
- C. The statement produces an error ITEM_CNT cannot be displayed in the outer query.
- D. The statement produces an error because the GROUP By clause cannot be usesd in a subquery in the FROM clause.
正解：B
質問 # 139
View the Exhibit and examine the details of PRODUCT_INFORMATIONtable.
You have the requirement to display PRODUCT_NAMEfrom the table where the CATEGORY_IDcolumn has values 12or 13, and the SUPPLIER_IDcolumn has the value 102088. You executed the following SQL statement:
SELECT product_name
FROM product_information
WHERE (category_id = 12 AND category_id = 13) AND supplier_id = 102088; Which statement is true regarding the execution of the query?
- A. It would not execute because the entire WHEREclause condition is not enclosed within the parentheses.
- B. It would not execute because the same column has been used in both sides of the ANDlogical operator to form the condition.
- C. It would execute but the output would return no rows.
- D. It would execute and the output would display the desired result.
正解：C
質問 # 140
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