eralchemy 0.0.7

Simple entity relation (ER) diagrams generation

ERAlchemy: Simple entity relation (ER) diagrams generation.

It’s now integrated with SQLAlchemy.

It’s also able to generate the ER digram from an existing database.

Quick Start

Use from python

from eralchemy import draw_er
# Draw from SQLAlchemy base
draw_er(Base, 'erd_from_sqlalchemy.png')

# Draw from database
draw_er("sqlite:///relative/path/to/db.db", 'erd_from_sqlite.png')

Use from the command line

render_er -i sqlite:///relative/path/to/db.db -o erd_from_sqlite.png

Install

To install ERAlchemy, just do pip install eralchemy ERAlchemy requires GraphViz to generate the graphs.

Install graphviz for your system.

Architecture

Architecture schema

Thanks to it’s modular architecture, it’s an extensible tool: it can also be connected to other ORMs/ODMs/OGMs.

Notes

ERAlchemy was inspired by erd.

License

Released under an Apache License 2.0

Creator: Alexis Benoist