Cartographic Data Base Hierarchy. Volume I. Systems Analysis and Design.
Abstract
The objective of the Cartographic Data Base Hierarchy project was to analyze, design, implement, and test an experimental data base system which employs a hierarchical encoding scheme. Highlights of the implemented system include the following. Design is based on a generalized feature classification system which allows for detailed description of cartographic features. The classification system is composed of feature classes, types, sub-types, eight special descriptors, special numeric, feature name, free text comment, and references to source materials. Implementation, for experimental purposes, is on the Honeywell 635 computer system using Integrated Data Store (IDS) for data management services, and is written in the COBOL Language. Functional capabilities include loading, retrieval, remote query, deletion, and modification. Remote query capability allows a user to interactively communicate with the CDB through a remote terminal for purposes of accessing and retrieving cartographic information. Hierarchical Data Structure which provides for four geographic segmentation levels, two levels of feature segmentation, and two levels of feature description (i.e., subjective and locational). Storage of geographic coordinate strings in a compact incremental format allowing for variable data resolutions.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1974
- Accession Number
- ADA004382
Entities
People
- Donald T. Alvarez
- M. Lynn Taylor