Polyhedra DBMS

Polyhedra is a family of relational database management systems offered by ENEA AB, a Swedish company. The original version of Polyhedra (now referred to as Polyhedra IMDB) was an in-memory database management system which could be used in high availability configurations; in 2006 Polyhedra Flash DBMS was introduced to allow databases to be stored in flash memory. All versions employ the client–server model to ensure the data are protected from misbehaving application software, and they use the same SQL, ODBC and interfaces. Polyhedra is targeted primarily for embedded use by Original Equipment Manufacturers (OEMs), and big-name customers include Ericsson, ABB, Emerson, Lockheed Martin, United Utilities and Siemens AG.

Polyhedra development was started in 1991 by Perihelion Technology Ltd, a subsidiary of Perihelion Software Ltd (PSL); initially, the project had a working title the "Perihelion Application Toolkit", but was soon renamed Polyhedra (using a left-over trademark from another PSL project). There was a management buyout of PTL in 1994, and the company name changed to Polyhedra plc to match the name of the product. Polyhedra plc was in turn acquired by Enea AB in 2001. All development and support is still done in the English town of Shepton Mallet, where PSL was based.