SELECT optiraal_rate ( a.region ' a.value ' b.cust_type ' a.duration ' a.start_date ' a.vehicle_type } FROM rentals a, ousts b WHERE rental id = : id;
 (}pC>
TT
  
. 3.1.   3GL-     
SELECT	optimal rate	
	( a. region ' a. value	
	' b . cust type ' a . duration	
	' a. start date	
FROM	' a, vehicle type rentals a, ousts	} b
WHERE	r^nt^l iri --- : id;	
 .

 
. 3.2,    
38
Oracle 8