An unnormalized relational data model based on user views

  • Authors:
  • G. Pernul

  • Affiliations:
  • University of Vienna, Austria

  • Venue:
  • ACM SIGMOD Record
  • Year:
  • 1987

Quantified Score

Hi-index 0.00

Visualization

Abstract

A description of a database design method according to user views is introduced. The database schema is decomposed by applying the operators: horizontal decomposition, vertical decomposition and derived horizontal decomposition. Resulting fragments (= effects of the decomposition) are controlled by a central Data Dictionary, consisting of two subschemata, the Application Subschema and the Data Subschema.