Data Model and the Design of a Scientific Database Management System

摘要

A data model consisting of two levels is discussed in this paper. The logical level integrates the n-dimensional concept with the graph concept into a single data structure. To satisfy the requirement of time variation of data definitions, the idea of effectivity is incorporated. At the physical level, the data model partitions the n-dimensional data space into subspaces which can be accessed randomly and processed in parallel. 17 refs., 4 figs. (ERA citation 10:045918)