for file(i) to file(n)
open file(i)
extract table(1) in file(i) and insert into table1 in mainmdb
extract table(2) in file(i) and insert into table2 in mainmdb
extract table(3) in file(i) and insert into table3 in mainmdb
extract table(4) in file(i) and insert into table4 in mainmdb
extract table(5) in file(i) and insert into table5 in mainmdb
extract table(6) in file(i) and insert into table6 in mainmdb
close file(i)
next file