Enhancements to the DBTG Model for Computer-Aided Ship Design.
Abstract
Computer-aided ship design (CASD) presents unusual requirements for data management: multiple views and working files must be described and processed. The CODASYL Data Base Task Group (DBTG) approach to data management is described and then evaluated in terms of CASD. Enhancements are recommended, including a capability for describing new special-purpose sets in a sub-schema, a capability for specifying a subset of a hierarchical structure as part of a user's view in a sub-schema, and a capability for defining procedures in the sub-schema to allow the user to conveniently follow a linear path through a complex structures. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1975
- Accession Number
- ADA029005
Entities
People
- Ann Ellis Bandurski
- David K. Jefferson