View the Exhibit and examine the structure of the ORDERS table.
The ORDERS table belongs to the user OE. HR is another user in the database. Evaluate the commands issued by users OE and HR in the following order:
Statement 1 by user OE: GRANT SELECT,
UPDATE(customer_id, order_total)
ON orders
TO hr;
Statement 1 by user HR: SELECT * FROM oe.orders;
Statement 2 by user HR: UPDATE oe.orders
SET order_total= 10000;
Which statement is true regarding the above commands?
A.
Statement 1 by user OE would not work because the statement has to be issued by the DBA.
B.
Statement 2 by user HR would not work because the grant is only for SELECT in a subquery of update.
C.
There are no errors in the statements issued by OE and HR; all the statements would execute successfully.
D.
Statement 1 by user HR would not work because SELECT and UPDATE privileges have been granted only on CUSTOMER_ID and ORDER_TOTAL columns.
GRANT SELECT,
UPDATE(sal, job)
ON emp
TO hr;
revoke SELECT on emp from hr;
revoke all on emp from hr;
revoke all from hr;
According to Oracle11g:
Only “UPDATE, REFERENCES and INSERT can be restricted by specifying a subset of updatable columns”.
“A select privilege can be restricted by creating a view with a subset of columns and granting the select privilege only on the view”.