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dbdiagram.io

Draw entity-relationship diagrams by writing code with dbdiagram.io.

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dbdiagram.io is a free tool for drawing entity-relationship diagrams by writing code in DBML, a markup language for documenting database structures. It is built by Holistics, a Singapore-based business intelligence company. The platform supports real-time collaboration, AI-assisted diagram generation from plain language descriptions, importing from SQL databases or Rails schemas, generating SQL statements, exporting to images and PDF, one-click sharing, version history with comparison and restore, and embedding diagrams into wikis, blogs, and documentation sites. A free ERD generator accepts pasted DBML or SQL and produces a live, shareable diagram without an account. The company also offers related products: dbdocs for database documentation, RunSQL for SQL query testing, DBML as an open-source schema definition language, and Holistics for BI reporting.

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