User Database

The user database in Bubble is a built-in data type called "User" that stores account information for every registered user of your app. It is automatically created when you set up a new Bubble app.

Bubble's user database is the foundation of any app that requires login, personalization, or user-specific data. Understanding how it works helps you build more secure and scalable apps from the start.

Key Takeaways

• Built-in data type: Bubble automatically creates a User data type with default fields like email and password for every new app.
• Extendable with custom fields: You can add any fields you need to the User data type, such as name, profile photo, subscription plan, or role.
• Separate from other data types: The User data type has special authentication properties that regular data types do not have, including password handling and session management.
• Privacy rules protect it: Bubble's privacy settings let you control exactly which user fields are visible to other users or accessible without login.

What is User Database in Bubble?

The user database in Bubble is the built-in User data type that stores authentication credentials and profile data for every account in your app. It is the central record for all user identity and session management in Bubble.

Every Bubble app that uses authentication relies on the User data type. When someone signs up, Bubble creates a new User record automatically. When they log in, Bubble matches their credentials to that record.

• Default fields included: Bubble's User data type comes with fields for email, encrypted password, and a few other default properties you cannot remove but can extend.
• Custom fields extend the profile: You add fields to the User data type for any profile information your app needs, such as name, role, company, profile picture, or billing status.
• One record per account: Each registered user in your app has exactly one User record. That record stores everything Bubble needs to authenticate and identify that person.

The User data type is special in Bubble because it connects directly to authentication logic, session handling, and the "Current User" expression that you use throughout your app's workflows and conditions.

How the User Database Works in Bubble

When a user signs up to your Bubble app, Bubble creates a new User record with their email and an encrypted password. When they log in, Bubble validates their credentials and creates a session that identifies them as the "Current User" throughout the app.

Bubble handles the technical parts of user authentication automatically. Your job is to design the data fields that go alongside the authentication fields and build the workflows that interact with them.

• Signup creates a record: The "Sign the user up" workflow action creates a new User record with the email and password the user entered, plus any additional fields you map in the action.
• Login creates a session: The "Log the user in" action checks the credentials against the User database and establishes a session, making the logged-in user accessible as "Current User" in all subsequent workflows.
• Current User expression: Throughout your app, "Current User" refers to the User record of whoever is logged in right now. This expression is used in conditions, data sources, and workflow logic everywhere.

Understanding how user authentication works conceptually helps you make better decisions about how you structure your Bubble user database and what data belongs on the User type versus a separate related data type.

Why the User Database Matters for No-Code Apps

The user database is what makes personalization, role-based access, and secure multi-user apps possible in Bubble. Without it, every user sees the same content and no data can be restricted to specific accounts.

Any app that has more than one user type or needs to show different content to different people depends on the user database to make those distinctions.

• Personalization uses user fields: Showing a user's name on their dashboard, displaying their order history, or remembering their preferences all require reading from their User record.
• Roles control access: Adding a role field to the User data type lets you show different pages and features to admin users versus standard users within the same Bubble app.
• Privacy rules restrict data: Bubble's privacy settings on the User data type control which fields other users can see, ensuring that private user information stays private.

For apps with a clear user hierarchy, like a marketplace with buyers and sellers or a platform with admins and members, the design of the user database is one of the most important early architectural decisions.

How to Structure the User Database in Bubble

Structure your Bubble user database by keeping authentication fields on the User data type and creating linked data types for complex, separate pieces of user-related information rather than adding too many fields directly to the User type.

A bloated User data type with dozens of fields becomes hard to manage. Thinking about what belongs directly on the User type versus in a related type keeps your data model clean.

• Profile data belongs on User: Basic profile information like name, photo, bio, and role belongs directly on the User data type since it describes the person's identity within your app.
• Linked types for complex data: If users have portfolios, subscription records, or detailed preference settings, create a separate data type that links back to the User with a User field rather than cramming everything onto the User type itself.
• Use privacy rules from the start: Set up Bubble's field-level privacy rules on sensitive User fields early rather than adding them later. Retrofitting privacy rules to a live app is more complex and risky.

Good user database design in Bubble is similar to how developers think about user tables in traditional databases. The same principles apply: keep the core type clean and let relationships handle the complexity.

Conclusion

The user database is the starting point for any Bubble app that has multiple users, requires login, or needs to show personalized content. Getting its structure right early, with the right fields, linked data types, and privacy rules, saves significant rework later as your app grows. At LOW/CODE Agency, we've helped 450+ clients build and scale apps on Bubble and other no-code platforms. Our clients include global brands like Medtronic, American Express, Coca-Cola, Zapier, and Sotheby's.

Frequently Asked Questions

Can I add custom fields to Bubble's User data type?

Yes. Go to Data, then Data Types, select User, and add any fields you need. These fields become part of every User record in your app.

How does Bubble store passwords securely?

Bubble encrypts passwords automatically before storing them. You never see or access raw passwords. Bubble handles all password hashing and comparison during login.

Can users see each other's User records in Bubble?

Only if you allow it in privacy rules. By default, Bubble's privacy settings restrict access. Configure field visibility carefully to protect sensitive user information.

How do I access the current logged-in user's data in Bubble?

Use the "Current User" expression anywhere in the editor to reference the logged-in user's record and access any field on their User data type.

What happens to a User record when the user deletes their account?

Bubble does not automatically delete User records. You need to build a workflow that deletes the User record and any related data when an account deletion is requested.

Can I have multiple user types in one Bubble app?

Yes. Add a role field to the User data type with options like Admin, Member, or Guest. Use that field in conditions to show different features to different user types.