If an app needs a DB anyway, has ZeroMQ then advantages over a DB based MQ, like PostgreSQL LISTEN/NOTIFY or SQLite with update_hook? Did anybody compare throu

If an app needs a DB anyway, has ZeroMQ then advantages over a DB based MQ, like PostgreSQL LISTEN/NOTIFY or SQLite with update_hook? Did anybody compare throughput/latency for these approaches? Edit: ... for the basic zmq patterns PUB/SUB, REQ/REP, Client/Server