The UR data model revisited

Yao-Chuan Tsai

研究成果: Article同行評審

摘要

The universal relation (UR) model is an attempt to achieve a very simple user interface by allowing the formulation of queries with respect to a single, imaginary relation (i.e., universal relation) defined over all the attributes appearing in the various relations of a database, while producing answers from the actual relations of the database. Previous publications covering the universal relation model have been too technical to be easily understood, and have not offered a solution to the ambiguity problem for which the universal relation model has achieved much criticism. This paper provides an accessible introduction to the universal relation model, which helps to clarify the misunderstanding of the universal relation model. It also provides a confirmation approach to solve the ambiguity problem, facilitating successful application of the model.

原文English
頁(從 - 到)47-71
頁數25
期刊International Journal of Information and Management Sciences
10
發行號1
出版狀態Published - 1999 十二月 1

All Science Journal Classification (ASJC) codes

  • 控制與系統工程
  • 管理資訊系統
  • 策略與管理
  • 工業與製造工程
  • 資訊系統與管理

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