i have 2 tables with almost exact the same fields
table 1 xx.yy,zz, a,b,c,d .....so on (the user will fill it)
table 2 a,b,c,d .....so on (the user will fill it)
table3 is the one i need to be filled
with the differents between table 1 a,b,c,d and table 2 a,b,c,d without the xx,yy,zz data of table1
will custom vieuw store the data in table 3 and more important how do i do it