Database Systems: A Real-time Database Management System for No. 5 ESS
D. K. Barclay, E. R. Byrne, F. K. Ng · Bell System Technical Journal · 1982
A database management system was designed and implemented for the No. 5 Electronic Switching System. It is a specialized database management system based on the relational data model. The database is distributed and subject to stringent real-time constraints and reliability requirements. The system characteristics, capabilities, and design philosophy are described herein.