单项选择题
A.The table created by SKD isnot accessibleand SKD cannot create new tables.
B.The tables created by SKD and HR remain， but both cannot create new tables.
C.The table created by HR remains and HR still has the CREATE TABLE system privilege.
D.The table created by HR remains and HR can grant the CREATE TABLE system privilege to other users.
单项选择题 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（）
单项选择题 View the Exhibit and examine the privileges granted to the MGR_ROLE role. The user SKD has been granted the CONNECT and RESOURCE roles only. The database administrator （DBA） grants MGR_ROLE to the user SKD by executing the command： SQL> GRANT MGR_ROLE TO SKDWITH ADMIN OPTION； Which statement is true about the user SKD after he/she is granted this role（）
单项选择题 The database instance has the following parameter setting： OS_AUTHENT_PREFIX = OPS$ OS_ROLES = FALSE REMOTE_OS_AUTHENT = FALSE REMOTE_OS_ROLES = FALSE TIMED_OS_STATISTICS = 0 You have a local operating system user SKD. You create a database user OPS$SKD， and then assignexternal authentication. The user OPS$SKD has the CREATE SESSION privilege. What would youachieve by the above process（）