How to Connect to HSQL HyperSQL
Connecting to the database will require to enter the host, port, database user and password as explained in the Connection Dialog.If you get HSQLDB HyperSQL User Not Found Error when you connect with a blank user id, it may be necessary to connect with the default admin user. The default login information would be a user id of SA and a blank password.
Firewalls & anti-viruses may block database connections. Read How to enable Firewall connections.