Data base management systems (2nd ed.)
Data base management systems (2nd ed.)
A CODASYL CAD data base system
DAC '81 Proceedings of the 18th Design Automation Conference
System facilities for CAD databases
DAC '80 Proceedings of the 17th Design Automation Conference
Weaknesses of commercial data base management systems in engineering applications
DAC '80 Proceedings of the 17th Design Automation Conference
An integrated mask artwork analysis system
DAC '80 Proceedings of the 17th Design Automation Conference
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The most fundamental building blocks in any CAD system are the data structure and associated data base management routines. The performance of application programs is directly dependent on the data base access time and the efficiency of the management subroutines which are the interface between data base and application programs. The designer of a minicomputer based CAD system is always faced with the need to design a data structure and interface since the available commercial Data Base Management Systems (DBMS) cannot be used due to special restrictions imposed on the data base and associated management routines by the mini-based CAD environment. This paper discusses the requirements and design of such a mini-based CAD data base and management system.