Database schema evolution using EVER diagrams

Chien Tsai Liu, Shi Kuo Chang, Panos K. Chrysanthis

研究成果: 書貢獻/報告類型會議貢獻

8 引文 斯高帕斯(Scopus)

摘要

We present an approach to schema evolution through changes to the ER diagram representing the schema of a database. In order to facilitate changes to the ER schema we enhance the graphical constructs used in ER diagrams, and develop EVER, an Evolutionary ER diagram for specifying the derivation relationships between schema versions, relationships among attributes, and the conditions for maintaining consistent views of programs. In this paper, we demonstrate the mapping of the EVER diagram into an underlying database and the construction of database views for schema versions. Through the reconstruction of views after database reorganization, changes to an ER diagram can be made transparent to the application programs while all objects in the database remain accessible to the application programs. The EVER system can serve as a front-end for object-oriented databases.

原文英語
主出版物標題Proceedings of the Workshop on Advanced Visual Interfaces AVI
頁面123-132
頁數10
DOIs
出版狀態已發佈 - 1994
對外發佈Yes
事件Workshop on Advanced Visual Interfaces, AVI 1994 - Bari, 意大利
持續時間: 六月 1 1994六月 4 1994

其他

其他Workshop on Advanced Visual Interfaces, AVI 1994
國家意大利
城市Bari
期間6/1/946/4/94

ASJC Scopus subject areas

  • Software
  • Human-Computer Interaction

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