. 3. . C++Builder 3.0,  "/"  Internet
    (            ),   :
	SALESMAN			
ITEM				
	0	3500	1300	4800
	600	500	500	1600
	800	1200	2700	4700
	1400	5200	4500	11100
 :  ,        (     ITEM),    -,   ,    ? (     SALESMAN),    -.        ^     (   PAYMENT)    ,      SALESMAN  ,   ITEM -  .  ,      :
SELECT  SUM(PAYMENT)   FROM SALES WHERE   (SALESMAN=''   AND ~~1='' ).
,    -     ^           ,      ,  , -,       , '       -? "      ,   - ,       .     ,             ,      ,    ,   SQL-   -,     ,    .
        -?              .    : "   ?",  "    (  ) ,  ?",  "   ,  ?"  ,    
116
      
,      PAYMENT   ,      SALESMAN  ,   ITEM -  ,     .
       -,       - -        ,  Microsoft Excel.             .
       ITEM  SALESMAN     -.   ,       : "      3 ?" &   ,     PAYMENT   ,        - ITEM, SALESMAN  SALEDATE, ,      -,       ITEM, SALESMAN  SALEDATE,          -:
 6.2.      
01.04.98		SALESMAN		 
ITEM				
	0	0	500	500
	600	0	0	600
	0	0	0	0
 	600	0	500	1100
02.04.98	SALESMAN			 
ITEM				
	0	0	0	0
	0		0	0
	800	0	0	800
 	800	0	0	800
117