>r# household Parent house# ages >1 Smiths Robert 27 42 >2 Bobby 27 4 && child of Robert >3 Barnes Mary 74 32 >4 Margy 74 2 && child of Mary >etc. >>
>r# household inhabitants house# ages >1 Smiths Robert, Bobby 27 42,4 >2 Barnes Mary, Margy 74 32,2 >etc. >>
>r# household Parent house# ages >1 Smiths Robert 27 42 >2 Smiths Bobby 27 4 && child of Robert >3 Barnes Mary 74 32 >4 Barnes Margy 74 2 && child of Mary >etc. >>
HOUSEHOLDS.DBF iID Name House# 1 Smith 27 2 Barnes 74 PEOPLE.DBF iID iHousehold FirstName Age 1 1 Robert 42 2 1 Bobby 4 3 2 Mary 32 4 2 Margy 2I'd also store a birthdate rather than an age.