The urn:org:netkernel:mod:db module is licensed under the 1060 Public License v1.0.
The H2 Database is dual licensed under a modified version of the MPL 1.1 (Mozilla Public License) or the EPL 1.0 (Eclipse Public License).
See the H2 Database website for additional information.
The HSQL Database is licensed by the Hypersonice SQL Group license and the HSQLDevelopment Group license.
See the HSQL Database website for additional information.