Database Systems: Design and Implementation of a Production Database Management System (DBM-2)
T. C. Chiang, G. R. Rose · Bell System Technical Journal · 1982
The DBM-2 is a transaction-oriented database management system designed to track activities within an organization. Being a production system, DBM-2 has different requirements and design criteria than exploratory database management systems. To support such applications in a production environment, DBM-2 is required to have high performance and flexibility. An extended entity-relationship (E-R) data model provides a basis for DBM-2 in meeting the requirements. The extended E-R data model simplifies the handling of existence dependency between data records by DBM-2. This paper presents the design and implementation of DBM-2. Special attention is given to the implementation of “associations” between records, because the implementation is critical for supporting the E-R model.