什么是实体关系图（ERD）？ - Visual Paradigm
首先，什么是实体关系图？ 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 …
ERDPlus
Free ERD modeling tool for creating Entity-Relationship Diagrams and relational/star schemas, aiding in visualizing and designing databases.
ER Diagram (ERD) - Definition & Overview | Lucidchart
What is an Entity Relationship Diagram (ERD)? See ultimate guide to ER diagrams including a video overview, origins, uses, examples, components, limitations, and guidelines on how to draw them for …
Entity Relationship Diagram (ERD) - What is an ER Diagram?
An ERD visualizes the relationships between entities like people, things, or concepts in a database. An ERD will also often visualize the attributes of these entities.
实体关系图_百度百科
ER模型，全称为实体联系模型、实体关系模型或实体联系模式图（ERD）（英语：Entity-relationship model）由美籍华裔计算机科学家陈品山发明，是概念数据模型中高层描述所使用的数据模型或模式 …
快速入门 | ERD Online
ERD 是Entity-Relationship Diagram的缩写，中文意思为实体关系图，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。
What Is an Entity Relationship Diagram (ERD)? - Creately
Jul 17, 2025 · An Entity Relationship Diagram (ERD) is a visual representation of different entities within a system and how they relate to each other. It is a tool used to design and model relational …
什么是实体关系图 (ERD)？ | 常见 ERD 组件 | ERD 类型| IBM
实体关系图 (ERD) 是一种特殊类型的流程图，用于传达系统内不同实体之间的关系类型。 其使用一组确定的符号，包括矩形、椭圆形和菱形，并以连接线相互连接。
What is an Entity Relationship Diagram? | Miro
Oct 10, 2025 · An entity relationship diagram (also known as an ER diagram or ERD diagram or simply ERD) shows how entities (people, objects, and concepts) interact. These conceptual data models …
Everything about an Entity Relationship Diagram (ERD) - Xmind
May 27, 2024 · An Entity Relationship Diagram (ERD) is a visual tool used in database design to map out the entities within a system and how they relate to one another. ERDs use symbols and …