> Ok, I can connect via JDBC with MATLAB to this database, I' know
> that, but I don't know what and how install to connect to any FB
> database via JDBC.

Please read Matlab documentation on how to plug in JDBC databases,
just use following things:

JDBC driver class : org.firebirdsql.jdbc.FBDriver
JDBC URL : jdbc:firebirdsql:host[/port]:c:/path/to/db/my.gdb
User name : SYSDBA
Password : masterkey

You can download Firebird JCA/JDBC driver from download section of the
Firebird project, you have to put firebirdsql-full.jar into the place
specified in Matlab documentation.

Hope this helps.

Roman Rokytskyy