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NEW QUESTION 44
Examine this SELECT statement and view the Exhibit to see its output:

SELECT constraints_name, constraints_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.)

A. The R_CONSTRAINT_NAME column contains an alternative name for the constraint.B. 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.C. In the second column, 'c' indicates a check constraint.D. The STATUS column indicates whether the table is currently in use.

Answer: B,C

 

NEW QUESTION 45
Which three tasks can be performed by DDL statements?

A. creating multiple savepoints to enable partial rollback of a transactionB. providing an alternative name for a tableC. preventing data retrieval from a table outside of office hoursD. preventing any data modification to a tableE. modifying a table to prevent data that violate certain conditions from being entered in a column

Answer: B,D,E

 

NEW QUESTION 46
Which two statements are true? (Choose two.)

A. The user SYSTEM owns all the base tables and user-accessible views of the data dictionary.B. All the dynamic performance views prefixed with v$ are accessible to all the database users.C. The USER_OBJECTS view can provide information about the tables and views created by the user who queries the view.D. DICTIONARY is a view that contains the names of all the data dictionary views that the user can access.E. The USER_SYNONYMS view can provide information about private synonyms.

Answer: C,E

 

NEW QUESTION 47
View the exhibit and examine the data in ORDERS_MASTERand MONTHLY_ORDERStables.

Evaluate the following MERGEstatement:
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_MASTERtable would contain the ORDER_IDs1 and 2.B. The ORDERS_MASTERtable would contain the ORDER_IDs1, 2 and 4.C. The ORDERS_MASTERtable would contain the ORDER_IDs1, 2 and 3.D. The ORDERS_MASTERtable would contain the ORDER_IDs1, 2, 3 and 4.

Answer: B

Explanation:
Explanation/Reference:
References:
https://docs.oracle.com/cd/B28359_01/server.111/b28286/statements_9016.htm

 

NEW QUESTION 48
Examine the structure of the EMPLOYEEStable.

There is a parent/child relationship between EMPLOYEE_IDand MANAGER_ID.
You want to display the last names and manager IDs of employees who work for the same manager as the employee whose EMPLOYEE_IDis 123.
Which query provides the correct output?
SELECT e.last_name, m.manager_id

A. FROM employees e LEFT OUTER JOIN employees m
on (e.manager_id = m.manager_id)
WHERE e.employee_id = 123;B. FROM employees e RIGHT OUTER JOIN employees m
on (e.manager_id = m.employee_id)
AND e.employee_id = 123;
SELECT e.last_name, m.manager_idC. FROM employees e RIGHT OUTER JOIN employees m
on (e.employee_id = m.employee_id)
WHERE e.employee_id = 123;
SELECT m.last_name, e.manager_idD. FROM employees e LEFT OUTER JOIN employees m
on (e.employee_id = m.manager_id)
WHERE e.employee_id = 123;
SELECT e.last_name, e.manager_id

Answer: A

 

NEW QUESTION 49
......


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