This directory contains the MCF nodes for all defined schemas in Data Commons.

These files are kept in-sync with the Google repository via Copybara:

• Changes inside Google are immediately copied here.
• Approved GitHub pull requests are sent to the Google respository, where it is tested; if approved, the PR will merge into both the Google and GitHub repository.
  • IMPORTANT: DO NOT MERGE schema changes (any files ending with .mcf). Copybara will directly commit to the main branch then mark your PR as merged.

• core/schema.mcf contains MCF representation of Schema.org schemas.
• core/dcschema.mcf contains general Data Commons classes and properties.
• core/dcschema_enum_classes.mcf contains Data Commons enum classes.
• core/dcschema_enum_instances.mcf contains Data Commons enum instances.
• core/enum_specializations.mcf contains enum specializationOf relationships. Please handle this file with care.
• biomedical_schema contains the Biomedical Data Commons (BMDC) domain specific schema.
• stat_vars contains curated StatisticalVariable instances for associating statistics with in the Data Commons graph.
• All other MCF files are source or domain specific.

In https://github.com/datacommonsorg/schema, click on "Fork" button to fork the repo.

Clone your forked repo to your desktop.

Add datacommonsorg/schema repo as a remote:

git remote add dc https://github.com/datacommonsorg/schema.git

Every time when you want to send a Pull Request, do the following steps:

git checkout main
git pull dc main
git checkout -b new_branch_name
# Make some code change
git add .
git commit -m "commit message"
git push -u origin new_branch_name

Then in your forked repo, you can send a Pull Request. If this is your first time contributing to a Google Open Source project, you may need to follow the steps in contributing.md.

Wait for approval of the Pull Request and merge the change.