Hi,

Thank a lot for your help and advise. It really help me to understand
it more in details.

However, how come my application when I open a bundles of dbf files in the
begining like

* open of dbf files first
USE tbla IN 0 ALIAS A
USE tblb IN 0 ALIAS B
USE tblc IN 0 ALIAS C

* Next, do other command
SELECT A <=========== Error, alias not found
* do other command too

* Finally, close the dbf file
USE IN A
USE IN B
USE IN C

Why do the above happen, please advise. It really confused me.
Thank a lot