DATA DICTIONARY FOR LEARNING DATA ANALYSIS.

被引：0

作者：

Maddison, R.N. ^{[1
]}

Gawronski, A.J. ^{[1
]}

机构：

[1] Open Univ, Mathematics Faculty,, Milton Keynes, Engl, Open Univ, Mathematics Faculty, Milton Keynes, Engl

来源：

Computer Journal | 1985年 / 28卷 / 03期

关键词：

DATA PROCESSING - Data Reduction and Analysis - EDUCATION;

D O I：

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中图分类号：

学科分类号：

摘要：

A data dictionary system, DADICS, was conceived and developed as an online activity for students of an OU data analysis course. The system holds a highly structured knowledge base of facts about a number of conceptual data models, corresponding modeling rules, and the user's session state. These all form a semantic network of sentences, each with a subject, verb, and one or several objects. By simple commands the user may: choose a model representation - e. g. entities, attributes and relationships; select a local or global model; and list as sentences the relevant facts about any element. Alternatively he may update a model, insert facts as discovered, and command the system to highlight inconsistencies. The implementation is a relatively short general-purpose Pascal program that interprets the stored facts to determine what is required.

引用

页码：270 / 281