An introduction to database systems: vol. I (4th ed.)
An introduction to database systems: vol. I (4th ed.)
The entity-relationship model—toward a unified view of data
ACM Transactions on Database Systems (TODS) - Special issue: papers from the international conference on very large data bases: September 22–24, 1975, Framingham, MA
System R: relational approach to database management
ACM Transactions on Database Systems (TODS)
Database abstractions: aggregation and generalization
ACM Transactions on Database Systems (TODS)
Representations for Rigid Solids: Theory, Methods, and Systems
ACM Computing Surveys (CSUR)
Relational database: a practical foundation for productivity
Communications of the ACM
Database abstractions: aggregation
Communications of the ACM
A relational model of data for large shared data banks
Communications of the ACM
Revised report on the algorithm language ALGOL 60
Communications of the ACM
Principles of Database Systems
Principles of Database Systems
Construction and Use of Geometric Models
Computer Aided Design: Modelling, Systems Engineering, CAD-Systems - CREST Advanced Course
Extending the relational database data model for design applications
DAC '84 Proceedings of the 21st Design Automation Conference
| Hi-index | 0.00 |
For the fast growing CAD/CAM technologies, geometric solid modeling plays one of the most important roles. In order to satisfy a variety of engineering applications, an integrated database management system based on solid modeling is highly desirable. In the proposed approach, a concise object representation scheme, Constructive Solid Geometry (CSG), is adopted as the basis for database design. The underlying generic relational model is found to be more adequate than the conventional relational model in characterizing the embedded data abstraction. A systematic method is devised for converting the CSG scheme into a generic model based on the BNF grammar which depicts the CSG scheme. A relational query language, SEQUEL, has been modified to define, control, and manipulate the flat relations which represent the highly structural generic model.