DBDiagram can help with drawing Entity-Relationship Diagrams painlessly. Designed for developers and data analysts.
<img src="https://dbdiagram.io/static/img/dbdiagram-demo.6a00731.gif" alt />
Open Source: No
Free: It has a free tier and paid ones.
<h2 id="heading-my-take">My Take</h2>
<ul>
<li>I see to often suboptimal DB ERD. The key here is collaboration in early steps, share what you (the developer) think is the best schema and ask for a review.
</li>
<li>I wrote about this similar tool: <a target="_blank" href="https://postgres.hashnode.dev/db-tools-use-sqldbm-to-model-your-db-online">https://postgres.hashnode.dev/db-tools-use-sqldbm-to-model-your-db-online</a>
</li>
<li>I guess eventually people will use an open source free solution based on <a target="_blank" href="https://mermaid.js.org/">https://mermaid.js.org/</a>.
</li>
<li>Don't forget to document your reasoning, why you think this is the best solution, what are the keys of the table, when to de-normalize the schema...
</li>
</ul>

DBDiagram can help with drawing Entity-Relationship Diagrams painlessly.  
Designed for developers and data analysts.

![](https://dbdiagram.io/static/img/dbdiagram-demo.6a00731.gif align="left")

**Open Source:** No

**Free:** It has a free tier and paid ones.

## **My Take**

* I see to often suboptimal DB ERD. The key here is collaboration in early steps, share what you (the developer) think is the best schema and ask for a review.
    
* I wrote about this similar tool: [https://postgres.hashnode.dev/db-tools-use-sqldbm-to-model-your-db-online](https://postgres.hashnode.dev/db-tools-use-sqldbm-to-model-your-db-online)
    
* I guess eventually people will use an open source free solution based on [https://mermaid.js.org/](https://mermaid.js.org/).
    
* Don't forget to document your reasoning, why you think this is the best solution, what are the keys of the table, when to de-normalize the schema...

DB Tools - DBDiagram is an online DB ERD

CTO of Metis (https://www.metisdata.io/) - We built a database observability platform that developers love. From development to production, Metis covers all your database needs.
