Database — Design: Logical Design (Part 6) | by Omar Elgabry
2016年9月14日 · The logical design is about mapping of entities, relationships, and multi-valued attributes into a logical schema. Result of mapping the company ER schema into a relational schema. — From...
Logical design - Database Systems - Edinburgh Napier University
The starting point for the logical design should be the ER diagram from the conceptual design stage. The outputs from the logical design stage are a new ER diagram that reflects the actual relational implementation, and a data dictionary.
数据建模 Database Modeling：概念 (Conceptual) vs 逻辑 (Logical…
2021年10月28日 · 数据建模通过实体关系图（ERD）描绘软件系统，包括概念、逻辑和物理数据模型。 概念模型关注业务对象及关系，逻辑模型定义数据结构和关系，物理模型描述数据库的具体实现。 ERD中的实体、属性和关系是模型的基本元素，用于指导数据库设计和实现。 数据建模是一种使用实体关系图（ER图）记录软件系统的技术，实体关系图是公司数据库表中数据结构的表示。 它是公司业务需求的非常有力的表达。 数据模型有多种用途，从高级概念模型、逻辑到物理 …
Logical Design Documentation - A Comprehensive Guide for …
2024年10月21日 · DbSchema streamlines the entire process from logical to physical documentation through its powerful features: Advanced documentation generation with comments and tags. Specialized tools like the Conversion Dictionary and Naming Dictionary. Exporting capabilities with interactive HTML5 documentation. DbSchema’s Logical Design Tools.
Chapter 8. Logical Design For Database Systems
This chapter focuses on logical design for the development of database systems and has two main objectives: (1) describe two commonly used logical modeling tools for systems design-- Entity-Relationship (ER) modeling and data-flow diagrams (DFD), and (2) provide specific guidelines using an "event-oriented" approach to facilitate the ...
Logical design is the process of constructing a model of the data used in an enterprise based on a specific data model (in our case relational), but independent of a particular DBMS and other physical considerations. Logical design is a semiphysical realisation of the concepts.
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Logical Design
The logical design transforms a conceptual schema into a set of relational schemas The logical design is performed as a sequence of the following steps: (1) The multivalued attributes are replaced with the classes of objects and depending on the semantics of multivalued attribute either with one-to-many or many-to-many associations
Logical Database Design: from Conceptual to Logical Schema
Logical database design is the process of transforming (or mapping) a conceptual schema of the application domain into a schema for the data model underlying a particular DBMS, such as the relational or object-oriented data model.
Database Logical Design - DbSchema
The database logical design is the process of creating a conceptual schema or data model of a database. This process involves identifying the entities, attributes, and relationships that are important to the organization or system being modeled.
06Logical design - University of Wollongong
A logical design transforms a conceptual schema, into a set of relational schemas. Transformation of a conceptual schema is controlled by a collection of simple rules replacing the components of a simplified class diagram with linear specifications relational …