Thanks for the replays,
I know, we can many options about DB, ADS has SQL and ISAM Technic to access the data, to work with local DB, we need only copy 2 DLL, to migrate client server we reuse 100% of code changing one line in external file not in the .exe, but I think we don´t need to discus about it.
I appreciate your comments , I´m really new in Lazarus, Delphi or pascal, is my first app I´m trying to find an develop environment alternative, I´m come from Harbour (clipper) , but I can see it will be hard, but I will try
thanks very much
regards
Marcelo