Parallel Database Machines

he controller. This is a more economical solution, however the capacity is less than for intelligent devices. This type of product has had some commercial success. The CAFS - Content Addressable File Storage has been marketed by ICL for many years. 3) Associative memory systems. Instead of increasing the search capacity of the permanent storage or searching data on the fly, this solution is based on fast handling of data after they are brought into memory. It requires special memories with built in logic for comparing data and setting off triggers on match. The problem is cost, it is hard to afford large enough memories. The more well known systems in this group are STARAN, NON-VON and RELACS. 4) Multiprocessor database computers. This group is by far the largest. The database computers with a certain commercial succes: the IDM from Britton-Lee, DBC/1012 from Teradata Co. and the Tandem Non Stop Systems are in this group. So are many of the mor