Feature Compatibility

Atlas is Open-Core

Atlas is an open-core project. The core engine is open-source and available on GitHub under the Apache 2.0 license. Open-source features cover the core functionality of Atlas, including database inspection, diffing, migration planning and execution, and more. For the basic and common use cases, the open-source version of Atlas is more than enough.

In addition, Atlas also offers a number of advanced features that are only available in proprietary versions. The vast majority of these features are available in the Pro Plan of Atlas, which you can use for free by creating an Atlas account.

Pro Plan

We provide a free 14-day trial for new users, after which a license is required to continue using Atlas Pro.

Users can upgrade to the Pro Plan for $9/seat per month.

To learn more about our plans and pricing, visit the Atlas Pricing Page.

Create your Atlas Pro account by running the command below and following the instructions on the screen:

atlas login

Feature Availability

The following sections clarify which features are available to users who use the open-source version of Atlas and which are exclusively available to those on the Atlas Pro Plan.

CLI Features

Feature	Availability
Database Inspection	Open
Schema Diffing	Open
Versioned Migrations	Open
Declarative Migrations	Open
Migration Linting	Partially Open (Full version in Pro)
Custom Schema Rules	Pro
Pre-migration checks	Pro
Migration Checkpoints	Pro
Schema Visualization	Pro
Interactive Migrations	Pro
Testing Framework	Pro

Database Support

All common open-source RDBMS are supported in all versions of Atlas. In addition, Atlas supports SQL Server, ClickHouse and Redshift in the Pro Plan.

Driver	Availability
PostgreSQL	Open
MySQL	Open
MariaDB	Open
SQLite	Open
CockroachDB	Open
TiDB	Open
LibSQL	Open
SQL Server	Pro
ClickHouse	Pro
Redshift	Pro

Database Features

Most common database features are supported in all versions of Atlas. More advanced features are available to users of the Pro Plan.

PostgreSQL

The following features are supported by the PostgreSQL driver in all versions of Atlas:

• Tables and columns
• Indexes
• Check, unique, and exclusion constraints
• Foreign keys constraints
• Enum types
• Comments

Some features are only available in the Pro Plan. For example:

• Partitions
• Views
• Materialized views
• Stored procedures
• Functions
• Sequences
• Extensions
• Row-level security/policies
• Composite types
• Domain types
• Foreign servers
• Triggers, constraint triggers and event triggers
• And more. For the full list, see the PostgreSQL driver documentation.

MySQL

The following features are supported by the MySQL driver in all versions of Atlas:

• Tables and columns
• Indexes
• Foreign keys
• Check and unique constraints
• Comments

Some features are only available in the Pro Plan. For example:

• Partitions
• Views
• Full-text search index
• Triggers
• Stored procedures
• Functions
• And more. For the full list, see the MySQL driver documentation.

MariaDB

The following features are supported by the MariaDB driver in all versions of Atlas:

• Tables and columns
• Indexes
• Foreign keys
• Check and unique constraints
• Comments

Some features are only available in the Pro Plan. For example:

• Partitions
• Views
• Temporal tables
• Triggers
• Stored procedures
• Functions
• And more. For the full list, see the MariaDB driver documentation.

SQLite

The following features are supported by the SQLite driver in all versions of Atlas:

• Tables and columns
• Indexes
• Foreign keys
• Constraints

Some features are only available in the Pro Plan. For example:

• Views
• Triggers
• And more. For the full list, see the SQLite driver documentation.

SQL Server

The SQL Server driver is only available to Atlas users with the Pro Plan. It supports the following features:

• Tables and columns
• Indexes
• Foreign keys
• Constraints
• Comments
• Views
• Materialized views
• Stored procedures
• Functions
• Triggers
• Sequences
• Alias types
• Table types
• Full-text search indexes
• Temporal tables
• And more. For the full list, see the SQL Server driver documentation.

ClickHouse

The ClickHouse driver is only available to Atlas users with the Pro Plan. It supports the following features:

• Tables and columns
• Indexes
• Comments
• Views
• Materialized views
• And more. For the full list, see the ClickHouse driver documentation.

Redshift

The Redshift driver is only available to Atlas users with the Pro Plan. It supports the following features:

• Tables and columns
• Indexes
• Foreign keys
• Constraints
• Comments
• Partitions
• Views
• Materialized views
• And more. For the full list, see the Redshift driver documentation.

Data Sources

Data sources are a powerful feature of Atlas that allows you to load data from external sources into your Atlas Project.

Data Source	Availability
SQL	Open
External	Open
Runtimevar	Open
HCL Schema	Open
External Schema	Open
Remote Directory	Open
Template Directory	Open
AWS RDS Token	Open
GCP CloudSQL Token	Open
Composite Schema	Pro

Linting rules

Migration and schema linting help teams automate the verification of schema changes, ensuring they are safe and won't introduce any issues. Atlas' open plan includes a basic set of linting rules, while the Pro Plan provides a more advanced suite for deeper validation.

Linting Rule	Availability
Backward incompatible changes	Open
Destructive changes	Open
Data-dependent changes	Open
MySQL and MariaDB checks	Open
SQLite specific checks	Open
Naming conventions	Open
Concurrent index changes	Pro
PostgreSQL table-locking	Pro
Linear history protection	Pro
Custom linting rules	Pro

For more a detailed breakdown on linting rules, visit the Migration Linting page.