To access a database in a zip/jar, you specify the jar in the subsubprotocol.
The pathToArchive is the absolute path to the archive file. The databasePathWithinArchive is the relative path to the database within the archive. For example:
If you have trouble finding a database within an archive, check the contents of the archive using your archive tool. The databasePathWithinArchive must match the one in the archive. You might find that the path in the archive has a leading slash, and thus the URL would be:
Databases in a jar or zip file are always opened read-only and there is currently no support to allow updates of any type.