K and Q are programming languages. Q is the successor of K. Kx is the company behind kdb+ kdb+ is the database engine that K/Q can use to persist data. It’s l

K and Q are programming languages. Q is the successor of K. Kx is the company behind kdb+ kdb+ is the database engine that K/Q can use to persist data. It’s literally as if all your code is executed inside the database engine (because it is), you can access all data by memory and variables, and it periodically synced to disk (using mmap iirc).