Database machine

It is specially designed for database access and is tightly coupled to the main (front-end) computer(s) by a high-speed channel, whereas a database server is a general-purpose computer that holds a database and it's loosely coupled via a local area network to its clients.

Back end processors result in higher performance, increasing host main memory, increasing database recovery and security, and decreasing cost to manufacture.

Britton-Lee (IDM), Tandem (Non-Stop System), and Teradata (DBC) all offered early commercial specialized database machines.

[clarification needed] According to Julie McCann,[2] "Finally, back in 1983 Boral predicted the demise of the Database Machine (DBM) and he was right to an extent [5].

However as componentisation dissolves the DBMSs architecture into components and that this is integrated, without boundaries, with the operating system (which in turn only activated the components that are required by the DB function, thus tailoring the architecture down to the metal), means that at that instant the system becomes effectively a Database Machine but potentially without the problems of standardisation and portability of the past."