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单选题
Assuming PUBLIC has been granted all privileges on table T1, which of the following statements would continue to permit any user to add rows to table T1, but not remove them?（）
A
REVOKE DROP ON t1 FROM PUBLIC
B
REVOKE UPDATE ON t1 FROM PUBLIC
C
REVOKE DELETE ON t1 FROM PUBLIC
D
REVOKE CONTROL ON t1 FROM PUBLIC
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Assuming PUBLIC has been granted all privileges on table T1, which of the following statements would continue to permit any user to add rows to table T1, but not remove them?（）A、REVOKE DROP ON t1 FROM PUBLICB、REVOKE UPDATE ON t1 FROM PUBLICC、REVOKE DELETE ON t1 FROM PUBLICD、REVOKE CONTROL ON t1 FROM PUBLIC
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考题
The user HR owns the EMP table. The user HR grants privileges to the user SCOTT by using this command： SQL GRANT SELECT，INSERT，UPDATE ON emp TO scott WITH GRANT OPTION； The user SCOTT executes this command to grant privileges to the user JIM： SQL GRANT SELECT，INSERT，UPDATE ON hr.emp TO jim； Now， the user HR decides to revoke privileges from JIM using this command： SQL REVOKE SELECT，INSERT，UPDATE ON emp FROM jim； Which statement is true after HR issues the REVOKE command（）A、The command fails because SCOTT still has privileges.B、The command succeeds and privileges are revoked from JIM.C、The command fails because HR cannot revoke the privileges from JIM.D、The command succeeds and only HR has the privilege to perform the SELECT， INSERT， and UPDATEoperations on the EMP table.
考题
单选题Given that tables T1 and T2 contain the following rows: Table T1: C1 C2 1 4 1 3 1 2 Table T2: C1 C2 1 1 1 2 1 3 Which of the following queries will return only those rows that exist in both T1 and T2?（）A
SELECT * FROM t1 UNION SELECT * FROM t2B
SELECT * FROM t1 UNION DISTINCT SELECT * FROM t2C
SELECT * FROM t1 INTERSECT SELECT * FROM t2D
SELECT * FROM t1 WHERE (c1,c2)= (SELECT c1,c2 FROM t2)
考题
单选题The user HR owns the EMP table. The user HR grants privileges to the user SCOTT by using this command： SQL GRANT SELECT，INSERT，UPDATE ON emp TO scott WITH GRANT OPTION； The user SCOTT executes this command to grant privileges to the user JIM： SQL GRANT SELECT，INSERT，UPDATE ON hr.emp TO jim； Now， the user HR decides to revoke privileges from JIM using this command： SQL REVOKE SELECT，INSERT，UPDATE ON emp FROM jim； Which statement is true after HR issues the REVOKE command（）A
The command fails because SCOTT still has privileges.B
The command succeeds and privileges are revoked from JIM.C
The command fails because HR cannot revoke the privileges from JIM.D
The command succeeds and only HR has the privilege to perform the SELECT， INSERT， and UPDATEoperations on the EMP table.
考题
单选题Which of the following statements is used to revoke all DML privileges on table EMPLOYEE from user TOM?（）A
REVOKE ALL PRIVILEGES FROM USER tomB
REVOKE ALL ON EMPLOYEE FROM USER tomC
REVOKE EXECUTE ON EMPLOYEE FROM USER tomD
REVOKE PRIVILEGES ON EMPLOYEE FROM USER tom
考题
单选题Given that tables T1 and T2 contain the following rows: Table T1: C1 C2 5 4 5 2 5 5 Table T2: C1 C2 5 1 5 2 5 3 Which of the following queries will return only those rows that exist in T1 and not in T2?（）A
SELECT * FROM T1 MINUS SELECT * FROM T2B
SELECT * FROM T1 EXCEPT SELECT * FROM T2C
SELECT * FROM T2 UNION EXCEPT SELECT * FROM T1D
SELECT * FROM T1 NOT EXISTS SELECT * FROM T2
考题
单选题A user needs to create a trigger that will update table T2 whenever a row is added to table T1. Assuming the user has all appropriate privileges for table T2, which privilege is required on table T1 to create the trigger?（）A
REFERENCESB
SELECTC
UPDATED
ALTER
考题
单选题Given that tables T1 and T2 contain the following rows: Table T1: C1 C2 1 4 1 3 1 2 Table T2: C1 C2 1 1 1 2 1 3 Which of the following queries will return only those rows that exist in both T1 and T2?（）A
SELECT * FROM t1 UNION SELECT * FROM t2B
SELECT * FROM t1 UNION DISTINCT SELECT * FROM t2C
SELECT * FROM t1 INTERSECT SELECT * FROM t2D
SELECT * FROM t1 WHERE (c1,c2)= (SELECT c1,c2 FROM t2)
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