Project configuration


A Dataform project is primarily configured through the dataform.json file that is created at the top level of your project directory.

In addition, package.json is used to control NPM dependency versions, including the current Dataform version.


This file contains information about the project. These settings, such as the warehouse type, default schema names, and so on, are used to compile final SQL.

The following is an example of the dataform.json file for a BigQuery project:

  "warehouse": "bigquery",
  "defaultDatabase": "my-gcp-project-id",
  "defaultSchema": "dataform",
  "assertionsSchema": "dataform_assertions"

Changing default schema names

Dataform aims to create all objects under a single schema (or dataset in BigQuery) in your warehouse. This is usually called dataform but can be changed by changing the defaultSchema property to some other value. For example, to change it to mytables, update the configuration file as following:

  "defaultSchema": "mytables",

Assertions are created inside a different schema as specified by the assertionsSchema property.


This is a standard NPM package file which may be used to include JavaScript packages within your project.

Most importantly, your Dataform version is specified here, and can be updated by changing this file or running the npm install or npm update commands inside your project directory.

If you develop projects on Dataform Web, this is managed for you and can be largely ignored.

Updating Dataform to the latest version

All Dataform projects depend on the @dataform/core NPM package. If you are developing your project locally and would like to upgrade your Dataform version, run the following command:

npm update @dataform/core

If you use the dataform command line tool, you may also wish to upgrade your globally installed Dataform version:

npm update -g @dataform/cli