It does not support multiple user sessions. Otherwise, it is very good to organize the configuration data in a database, instead of using a file.
To query Derby database, we need to use a client software.
I use the ij client that can connect to Derby.
ij is available from this directory:
You should be able to see ij.
connect 'jdbc:derby:/<path to the derbydb folder>;user=<username>';
describe <user>.<table name>;
select * from SYS.SYSTABLES;