An configuration of access to the SQL Database is keept in 3 files. Their default location is a directory /etc/david-system/.sec. There are following files out there:

Their functions are different and all 3 files are needed. Essentially the only change that is required occasionally is a specification of the server name or its IP address where the SQL Database is set. A value localhost is used by default. In order to change it, please keep in mind to change that value in all 3 files.