Informix
Standard
The connection string is provided through the "HostName" parameter that exists in TSQLConnection.Params collection.
InformixServer=myServerAddress;Client_Locale=en_us.8859-1;Fet_Buf_Size=32767;OptOFC=1;AutoCommit=True;BlobSize=-1;WaitOnLocks=False;CommitRetain=False;IsolationLevel=ReadCommitted;Trim Char=False;
money=currency;decimal=bcd;int8=fmtbcd;lvarchar=string;
Standard dbExpress configuration parameters have higher priority against connection string parameters.