MySQL vs SchemaSpy

MySQL has no write-up on Specifiction yet; its figures are above.

SchemaSpy is a free, open-source command-line application that reads database metadata and creates shareable HTML documentation. It generates entity-relationship diagrams from an existing database, collects structural statistics, and can export those statistics to Excel or CSV. Reports can identify design anomalies such as missing indexes, implied relationships, and orphan tables. The project says it supports over a dozen databases directly and can work with others through JDBC drivers. Documentation generation can be placed in a CI/CD workflow, and SchemaSpy can run against an empty database replica because it reads structural information. There is no graphical interface: distribution is through a JAR file or Docker image. Installation requires Java, a database JDBC driver, and viz.js or Graphviz for relationship diagrams. The JAR excludes drivers, while the Docker image includes drivers for MySQL, MariaDB, PostgreSQL, and jTDS for MSSQL. The listed plan price is free.