SQLite
Similarly to PostgreSQL, you can use intelmq_psql_initdb to create initial SQL statements from harmonization.conf. The script will create the required table layout and save it as /tmp/initdb.sql.
Create the new database (you can ignore all errors since SQLite doesn't know all SQL features generated for PostgreSQL):
Then, set the database parameter to the your-db.db file path.
To output data to SQLite use SQL Output Bot with parameter engine set to sqlite. For more information see SQL Output Bot documentation page.