ER diagrams vs. EER diagrams: What’s the difference? | Nulab
2024年5月21日 · Enhanced entity-relationship (EER) diagrams are a more expansive version of ER diagrams. They are helpful tools for designing databases with high-level models. With their …
ERDPlus
Free ERD modeling tool for creating Entity-Relationship Diagrams and relational/star schemas, aiding in visualizing and designing databases.
ER vs EER Diagrams - Lucidchart
EER diagram, or EERD, stands for enhanced entity-relationship diagram. Essentially, it includes everything that an ER diagram does, but it allows you to include more detail. In an EERD, you …
什么是实体关系图（ERD）？ - Visual Paradigm
实体关系图也被称为 ERD、ER 图、实体联系模型、实体联系模式图或 ER 模型，是一种用于数据库设计的结构图。 一幅 ERD 包含不同的符号和连接符，用于显示两个重要的資訊： 系统范 …
Enhanced ER Diagram Tutorial - Lucidchart
The ultimate guide to understanding enhanced entity-relationship diagrams (EERD) and best practices in creating them. Sign up for Lucidchart for free and use our ERD shape libraries for …
A Guide to the Entity Relationship Diagram (ERD) - Database Star
2023年12月21日 · An Entity Relationship Diagram (ERD) is a type of diagram that lets you see how different entities (e.g. people, customers, or other objects) relate to each other in an …
ER Diagram Tool | Free Online App - SmartDraw
Create ER diagrams, aka entity relationship diagrams, and other database schema diagrams online using our ERD diagram tool.
【数据库基础】EER图（Enhanced Entity-Relationship Modelling） …
2022年6月17日 · 本文探讨了EER模型在实体关系图中的使用，关注何时区分特化子类和通用父类，以及参与性和不相交约束如何影响设计。 通过实例解析了特化（如Manager和Secretary角 …
ER图、ERD图 - CSDN博客
2023年2月26日 · 本文详尽介绍了使用Oracle SQL Developer Data Modeler进行实体关系图ERD绘制的方法及其功能特性。主要包括Data Modeler的基本介绍、ERD的设计步骤、规范化数据库 …
Online ERD Tool - Visual Paradigm
Visual Paradigm's online ERD software makes database design fast and straight-forward. The ERD diagramming tool has all the ERD symbols and connectors you need to create …