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You have been asked to create three users， PUB1， PUB2 and PUB3， for three newly hired employees and to allocate unlimited quota on their default tablespace PUBLISHER_TBS with no other privileges. After creating the users， which method can you use for granting the required privileges？（）
A:grant CONNECT role to all of the three users
B:grant RESOURCE role to all of the three users
C:grant both CONNECT and RESOURCE role to all of the three users
D:execute ALTER USER .. QUOTA UNLIMITED ON publisher_tbs command for all of the three users
E:create role with UNLIMITED TABLESPACE system privilege and assign the role to all of the three users

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出自：Oracle认证

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