单项选择题
A.The database user OPS$SKD will be able to administer the database.
B.The authentication detail for the database user OPS$SKD is recorded in the password file.
C.The local operating system user SKD will be able to access the database instance without specifying the username and password.
D.The database user OPS$SKD has to login with the password of the local operating system user SKD to access the database instance.
多项选择题 Examinethecommand：SQL>ALTERUSERskdACCOUNTLOCK；Whichtwostatementsaretrueafterthecommandisexecuted（）
多项选择题 View the Exhibit1， which shows the options that are selected to create the user SL_REP. Which two statements are true regarding this user（）
多项选择题 The user HR receives the following error while inserting data into the TTK table： ERROR at line 1： ORA-01653： unable to extend table HR.TTK by 128 in tablespace SMDUpon investigation， you find that SMD is a small file tablespace. Which three action would allow the user to insert data（）