This paper describes a two tier architecture for high speed data distr
ibution. The architecture consists of a database interlace network whi
ch distributes information from a central database to a number of serv
ers, and a user interface network which distributes information from t
he servers to the user terminals. The database interface network uses
the Selective Broadcast technique to distribute data on a high speed c
hannel. Analytical results and design examples showed that Selective B
roadcast technique can provide an order of magnitude smaller response
time under normal traffic conditions when compared to the nonselective
broadcast technique such as the Datacycle(TM) system.