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ERAlchemy is a tool that generates Entity-Relationship (ER) diagrams from databases or SQLAlchemy models and vice versa. It’s useful for database documentation, reverse engineering, and understanding complex schemas. ERAlchemy can export diagrams in formats like Graphviz and Mermaid, making it easy to include in reports or markdown files.
SchemaSpy analyzes database metadata to reverse engineer dynamic EntityRelationship (ER) diagrams. It works with just about any JDBC-compliant database (Oracle/MySQL/DB2/SQL Server/PostgreSQL/Sybase/etc) and can identify Ruby on Rails relationships.
DB Designer Fork is a fork of the fabFORCE DBDesigner 4. It integrates entityrelationship design,front-end (you can run queries) and SQL exporting.DB Designer Fork generates SQL scripts for Oracle, SQL Server, MySQL, FireBird, SQLite and PostgreSQL.
aSVERD is a little system for generating EntityRelationship Diagrams (ERD) as Scalable Vector Graphics (SVG). SVG can be viewed and zoomed in a Web Browser. The diagrams can be edited with an SVG editor and round-trip updated against the database.
This framework allows the definition of attributes, entities and relations as used in entity-relationship (ER) models. It will then handle input and representation of data appropriately.
Generate EntityRelationship Diagrams for a a database supported by the ADODB library, using PHP. The data for this ERD is kept in a table in the database.
Yet Another Database Designer - the goal of the project is to develop
a tool for designing relational databases. YAD_Designer is based on the entityrelationship model (see Chen et al.) and is targeted on the use in educational environments.
PremiER is an EntityRelationship Designer intended to ease the design, deployment and maintainance of database models. Observe Embarcaderos ER/Studio and Computer Associates ERWin for a hint of what's coming.