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Oracle Database SQL Sample Questions (Q261-Q266):

NEW QUESTION # 261
Examine the structure proposed for the TRANSACTIONS table:
Which two statements are true regarding the storage of data in the above table structure?
(Choose two.)

A. The TRANS_DATE column would allow storage of dates only in the dd-mon-yyyy format.
B. The CUST_CREDIT_VALUE column would allow storage of positive and negative integers.
C. The TRANS_VALIDITY column would allow storage of a time interval in days, hours, minutes, and seconds.
D. The CUST_STATUS column would allow storage of data up to the maximum VARCHAR2 size of 4,000 characters.

Answer: B,C

NEW QUESTION # 262
No-user-defined locks are used in your database.
Which three are true about Transaction Control Language (TCL)?

A. ROLLBACKwithout the TO SAVEPOINT clause undoes all the transaction's changes, releases its locks and erases its savepoints.
B. COMMITerases all the transaction's savepoints and releases its locks.
C. COMMITends the transaction and makes all its changes permanent.
D. ROLLBACK TO SAVEPOINT undoes the transaction's changes made since the named savepoint and then ends the transaction.
E. ROLLBACKwithout the TO SAVEPOINT clause undoes all the transaction's changes but does not erase its savepoints.
F. ROLLBACKwithout the TO SAVEPOINT clause undoes all the transaction's changes but does not release its locks.

Answer: A,B,C

Explanation:
Explanation/Reference: https://docs.oracle.com/cd/A58617_01/server.804/a58233/trans.htm
https://docs.oracle.com/cd/B19306_01/server.102/b14200/statements_9021.htm

NEW QUESTION # 263
View the exhibit and examine the descriptions of the DEPTand LOCATIONStables.

You want to update the CITYcolumn of the DEPTtable for all the rows with the corresponding value in the CITYcolumn of the LOCATIONStable for each department.
Which SQL statement would you execute to accomplish the task?

A. UPDATE dept d
SET city = ANY (SELECT city
FROM locations l)
B. UPDATE dept d
SET city = (SELECT city
FROM locations l)
WHERE d.location_id = l.location_id;
C. UPDATE dept d
SET city = ALL (SELECT city
FROM locations l
WHERE d.location_id = l.location_id);
D. UPDATE dept d
SET city = (SELECT city
FROM locations l
WHERE d.location_id = l.location_id);

Answer: D

NEW QUESTION # 264
Evaluate the following SQL statement:

Which statement is true regarding the outcome of the above query?

A. It executes successfully and displays rows in the descending order of PROMO_CATEGORY.
B. It produces an error because positional notation cannot be used in the ORDER BYclause with SET operators.
C. It executes successfully but ignores the ORDER BYclause because it is not located at the end of the compound statement.
D. It produces an error because the ORDER BYclause should appear only at the end of a compound query-that is, with the last SELECTstatement.

Answer: D

NEW QUESTION # 265
Examine this SELECT statement and view the Exhibit to see its output:

SELECT constraints_name, constraints_type, search_condition, r_constraints_name, delete_rule, status, FROM user_constraints WHERE table_name = 'ORDERS'; Which two statements are true about the output? (Choose two.)

A. In the second column, 'c' indicates a check constraint.
B. The STATUS column indicates whether the table is currently in use.
C. The DELETE_RULE column indicates the desired state of related rows in the child table when the corresponding row is deleted from the parent table.
D. The R_CONSTRAINT_NAME column contains an alternative name for the constraint.

Answer: A,C

NEW QUESTION # 266
......

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