将NIAM概念模式转换为EKNE关系数据库模式

Proceedings. PARBASE-90: International Conference on Databases, Parallel Architectures, and Their Applications Pub Date : 1990-03-07 DOI:10.1109/PARBSE.1990.77228

Y. Zhang, M. Orlowska

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引用次数: 1

摘要

描述了一个用于增强关系数据库设计的语义方法的系统。为了设计一个格式良好的NIAM概念模式，依赖理论可以作为启发式工具来帮助设计者检测NIAM概念模式中的派生事实类型(FTs)。为了设计最小的关系数据库模式，可以使用依赖理论作为启发式工具，找到候选的ft进行替代，与用户交互重新设计概念模式，然后将其转换为具有最小关系数量的EKNF(基本键范式)关系数据库模式。该系统采用Turbo Pascal 5.5在IBM PS2.>平台上实现

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Transform a NIAM conceptual schema into a EKNE relational database scheme

A system for enhancements of semantic methodologies for relational database design is described. In order to design a well-formed NIAM conceptual schema, dependency theory can be used as a heuristic tool to help the designer detect the derived fact types (FTs) in the NIAM conceptual schema. In order to design a minimal relational database schema, one can use dependency theory as a heuristic tool to find the candidate FTs for substitution, interact with the users to redesign the conceptual schema, and then transform it into an EKNF (elementary key normal form) relational database schema with the minimal number of relations. The proposed system is implemented using Turbo Pascal 5.5 on IBM PS2.<>

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Proceedings. PARBASE-90: International Conference on Databases, Parallel Architectures, and Their Applications

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