marcel/mermaid
1
0
Fork 0
mirror of https://github.com/mermaid-js/mermaid.git synced 2025-09-17 06:20:07 +02:00
Code Issues Packages Projects Releases Wiki Activity

chore: update ER diagram docs

Browse Source 
on-behalf-of: @Mermaid-Chart <hello@mermaidchart.com>
This commit is contained in:
darshanr0107
2025-09-03 13:10:50 +05:30
parent 94dfdf31b8
commit fca17f3b10
2 changed files with 62 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

38
docs/syntax/entityRelationshipDiagram.md
View File

@@ -135,6 +135,44 @@ erDiagram
"This **is** _Markdown_"
```
#### Optional Relationship Labels
Starting from Mermaid version 11.11.0, the relationship label in ER diagrams is optional. You can define relationships without specifying a label, and the diagram will render correctly.
For example, the following is valid:
```mermaid-example
erDiagram
BOOK }|..|{ AUTHOR
BOOK }|..|{ GENRE
AUTHOR }|..|{ GENRE
```
```mermaid
erDiagram
BOOK }|..|{ AUTHOR
BOOK }|..|{ GENRE
AUTHOR }|..|{ GENRE
```
This will show the relationships between the entities without any labels on the connecting lines.
You can still add a label if you want to describe the relationship:
```mermaid-example
erDiagram
BOOK }|..|{ AUTHOR : written_by
BOOK }|..|{ GENRE : categorized_as
AUTHOR }|..|{ GENRE : specializes_in
```
```mermaid
erDiagram
BOOK }|..|{ AUTHOR : written_by
BOOK }|..|{ GENRE : categorized_as
AUTHOR }|..|{ GENRE : specializes_in
```
### Relationship Syntax
The `relationship` part of each statement can be broken down into three sub-components: