{"categories":[{"label":"Python Modules","url":"https://skillfed.io/packages/category/software-development-libraries-python-modules/5"},{"label":"Database","url":"https://skillfed.io/packages/category/database"},{"label":"Visualization","url":"https://skillfed.io/packages/category/scientific-engineering-visualization"}],"enrichment":{"capability":"Generates Entity Relation (ER) diagrams from SQLAlchemy models or existing databases, outputting to image, PDF, or markdown formats.","skillfed_tags":["schema-visualization","database-tools"],"use_cases":["Generate visual documentation of an existing PostgreSQL or SQLite database schema for team reference","Export a SQLAlchemy ORM model as a diagram to include in project documentation or design reviews","Create filtered ER diagrams excluding system or audit tables from a large production database","Convert markdown ER specifications into visual diagrams for stakeholder presentation","Batch-generate schema diagrams from multiple databases using the command-line interface"],"what_it_does":"eralchemy reads database schemas or SQLAlchemy ORM models and generates visual Entity Relation diagrams. It accepts input from live databases (via SQLAlchemy connection URLs), SQLAlchemy declarative bases, or markdown-format ER files, then outputs diagrams as PNG, PDF, SVG, or markdown. The tool includes a command-line interface for batch processing and a Python API for programmatic use, with options to filter tables and columns, select database schemas, and customize diagram rendering (crowfoot notation, primary key markers, layout direction).\n\nThe package depends only on sqlalchemy at runtime; graphviz or pygraphviz must be installed separately to generate image output. It supports filtering by table name and column name, schema selection for multi-schema databases, and output format selection including mermaid diagram syntax. The modular architecture is designed to eventually support other ORMs beyond SQLAlchemy.","worth_installing":"Yes. Active maintenance, no known vulnerabilities, low install friction, and a single stable runtime dependency make this a safe choice. The Apache-2.0 license is permissive. Install it if you need to visualize database schemas or SQLAlchemy models; the GraphViz system dependency is the only real prerequisite."},"id":"eralchemy","links":{"html":"https://skillfed.io/packages/eralchemy","md":"https://skillfed.io/packages/eralchemy.md","pypi":"https://pypi.org/project/eralchemy/"},"maintenance":{"status":"active"},"meta":{"latest_release":"2026-05-05","license_spdx":null,"license_treatment":"permissive","name":"eralchemy","python_support":"supports_current","summary":"Simple entity relation (ER) diagrams generation"},"popularity":{"monthly_downloads":3938903,"position":2442,"tier":"top_5000"},"security":{"n_vulnerabilities":0},"version":"1.7.0"}