Similar to the Web server, the built-in SQL server in 4D v11 SQL can be enabled in a variety of ways:

Automatically launch SQL server at startup:

-Go to the preferences.
-Select the theme SQL.
-Enable the checkbox "Launch SQL Server at Startup".

The next time 4D starts, the SQL server will be running.

Manually in the Design environment:

-Select "Start SQL Server" item from the Run menu.

Programmatically starting the server:

-Execute the command START SQL SERVER in your method.