YouneedtobaseadatablockontheEMPtable,butyoudonotwanttog

单项选择题

You need to base a data block on the EMP table, but you do not want to give the users of the application access privileges on the table. Which type of data source would you use to create the data block?（）

A.table
B.transactional trigger
C.stored procedure
D.FROM clause query

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