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1Z0-047 Oracle Database SQL Expert
Displaying Data from Multiple
Tables
Describe set operators
Use a set operator to combine multiple a
single query
Control the order of rows returned
Manipulating Data
Describe each data manipulation language (DML)
statement
Insert rows into a table
Update rows in a table
Delete rows
from a table
Control transactions
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Which two statements are true regarding the
execution of the correlated subqueries? (Choose two.)
A.The nested query
executes after the outer query returns the row.
B.The nested query executes
first and then the outer query executes.
C.The outer query executes only once
for the result returned by the inner query.
D.Each row returned by the outer
query is evaluated for the results returned by the inner query.
Answer:A
D
OE and SCOTT are the users in the database. The ORDERS table is owned by OE.
Evaluate the
statements issued by the DBA in the following sequence: CREATE
ROLE r1; GRANT SELECT, INSERT
ON oe.orders TO r1; GRANT r1 TO scott; GRANT
SELECT ON oe.orders TO scott; REVOKE SELECT
ON oe.orders FROM scott; What
would be the outcome after executing the statements?
A.SCOTT would be able to
query the OE.ORDERS table.
B.SCOTT would not be able to query the OE.ORDERS
table.
C.The REVOKE statement would remove the SELECT privilege from SCOTT as
well as from the role R1.
D.The REVOKE statement would give an error because
the SELECT privilege has been granted to the
role R1.
Answer:A
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