Q=>I am wondering what happens when i copy a folder
H:\A  to C:\A (with
all the files) and open delphi from the C:\A folder
and why the connectionstring still points to
H:\A\D\BkpRules.mdb; and i get an error.

bayu imbang A=> use this :
ConnectionString
='Provider=Microsoft.Jet.OLEDB.4.0;Password=""'+';User
ID=Admin;'+'Data
Source='+ExtractFilePath+'\'+(Application.exename)+'BkpRules.mdb;'+...

Roger C. Morgan II A=>
The connection string would be stored in the datamodule .dfm file.
I always add the code below to my data module create method
to redirect the connection through the Data Link.
Connection.Close;
Connection.ConnectionString := 'FILE NAME=LinkFile.udl';
Connection.Open;

Comment=> thank you roger and bayu, both options work and I have now
different ways to implement it.
furthermore i learned that i can use:
ConnectionString Provider=Microsoft.Jet.OLEDB.4.0;Password=""'+';User
ID=Admin;'+'Data Source= .\data\BkpRules.mdb;' + ..... 
where the folder with the exe file is the parent of the folder .\data
however i have to delete the connectionstring definition in the object
inspector connectionstring property from the adoconnection before i
copy the folder with the program to another location.

  







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