No, I think this is more designed for the case where you're creating a database implementation yourself. This provides a protocol and a JDBC driver so you don't

No, I think this is more designed for the case where you're creating a database implementation yourself. This provides a protocol and a JDBC driver so you don't have to build them from scratch, just as Calcite provides a SQL parser. I've seen other databases do this by implementing the PostgreSQL wire protocol so they can use off-the-shelf PostgreSQL clients.