CHRISDIFFER – Open Source Tool for Schema Migrations

CHRISDIFFER

Compare PostgreSQL Schemas and Generate Migration Scripts.

Chrisdiffer is a cross-platform desktop application to aid software engineers in schema migrations. With Chrisdiffer you can visually compare your source and target Postgres databases, easily identify changes and generate the necessary scripts to update the target from the source. View and select changes using an intuitive GUI and copy the scripts to run in psql.

Installation

Cloneor Download the repo.

Run npm install to download the required libraries.

npm install

Run npm start to initiate the app.

npm start

OR

Download the app for Mac or Windows from http://www.chrisdiffer.com/ .

Usage

Simply provide the URLs or connection parameters to connect to your source and target databases (URLs to two test databases are provided as a demo).

Tab between 'Source' and 'Target' to see representations of each database's schema.

Select the 'DB Diff' tab to highlight all the differences between the two schemas:

GREENfor additions

RED/PURPLEfor deletions

YELLOWfor modifications

Click on differences to generate the SQL scripts necessary to update your source database's schema to match that of your target's.

Features

Compatible with any Postgres database (hosted on ElephantSQL, AWS, etc).

Lines are drawn to depict any foreign key relationships between data.

'Add All'allows you to generate all SQL scripts at once.

The Refresh button queries your databases to update the visual representations. After making changes to your source database, for example, you can refresh to ensure that its schema is now identical to that of the target's.

Built With

• React Javascript library for building responsive web apps
• Electron Create cross platfrom desktop applications using HTML and JS
• pg-promise Library for interacting with Postgres database
• D3 Visualize and create animations from data

Known Issues

Not compatible with Postgres 10.2+ hosted on AWS due to known bug with accessing the information_schema tables.

Issues

Please let us know about any issues you're having here or visit our website for more info.

Future Updates

• Support for other relational databases such as MySQL
• Support for composite primary keys
• Support for default values, checks, stored procedures

Authors

• Ge Sun ( https://github.com/g-es )
• Edwin Lee Rogers ( https://github.com/eleerogers )
• Kevin Mui ( https://github.com/kmui18 )

License

The MIT License (MIT)
Copyright © 2018 TEAM-OSTRICH