ENHANCEMENTS TO THE DBTG MODEL FOR COMPUTER-AIDED SHIP DESIGN

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)

  • Supplemental Notes:
    • Presented at the Workshop on Data Bases for Interactive Design, 15-16 Sep 75, Waterloo (Ontario). See also AD-A022 561.
  • Corporate Authors:

    David Taylor Naval Ship R&D Center

    Bethesda, MD  USA  20084
  • Authors:
    • Bandurski, A E
    • Jefferson, D K
  • Publication Date: 1975-10

Media Info

  • Pagination: 36 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00143586
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: DTNSRDC-4758 R&D Rpt.
  • Files: TRIS
  • Created Date: Nov 17 1976 12:00AM