As an alternative to setting the Visible property to No for the ORDERS_WINDOW, which built-in could you use to achieve the same result? （）

单项选择题Whichcanvasbuilt-indisplaythegivencanvasinfrontofanystackedcanvases?（）

A.HIDE_VIEW 
B.SHOW_VIEW 
C.SET_CANVAS_PROPERTY 
D.REPLACE_CONTENT_VIEW

单项选择题YouneedtobaseadatablockontheEMPtable,butyoudonotwanttogivetheusersoftheapplicationaccessprivilegesonthetable.Whichtypeofdatasourcewouldyouusetocreatethedatablock?（）

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