mirror of
https://github.com/n8n-io/n8n-docs.git
synced 2025-11-20 17:48:34 +00:00
119 lines
3.3 KiB
Markdown
119 lines
3.3 KiB
Markdown
---
|
|
description: Understand the n8n database structure
|
|
contentType: explanation
|
|
---
|
|
|
|
# Database structure
|
|
|
|
This page describes the purpose of each table in the n8n database.
|
|
|
|
## Database and query technology
|
|
|
|
By default, n8n uses SQLite as the database. If you are using another database the structure will be similar, but the data-types may be different depending on the database.
|
|
|
|
n8n uses [TypeORM](https://github.com/typeorm/typeorm){:target=_blank .external-link} for queries and migrations.
|
|
|
|
To inspect the n8n database, you can use [DBeaver](https://dbeaver.io){:target=_blank .external-link}, which is an open-source universal database tool.
|
|
|
|
## Tables
|
|
|
|
These are the tables n8n creates during setup.
|
|
<!-- vale off -->
|
|
### auth_identity
|
|
|
|
Stores details of external authentication providers when using [SAML](/user-management/saml/).
|
|
|
|
### auth_provider_sync_history
|
|
|
|
Stores the history of a SAML connection.
|
|
|
|
### credentials_entity
|
|
|
|
Stores the credentials used to authenticate with integrations.
|
|
|
|
### event_destinations
|
|
|
|
Contains the destination configurations for [Log streaming](/log-streaming/).
|
|
|
|
### execution_data
|
|
|
|
Contains the workflow at time of running, and the execution data.
|
|
|
|
### execution_entity
|
|
|
|
Stores all saved workflow executions. Workflow settings can affect which executions n8n saves.
|
|
|
|
### execution_metadata
|
|
|
|
Stores [Custom executions data](/workflows/executions/custom-executions-data/).
|
|
|
|
### installed_nodes
|
|
|
|
Lists the [community nodes](/integrations/community-nodes/) installed in your n8n instance.
|
|
|
|
### installed_packages
|
|
|
|
Details of npm community nodes packages installed in your n8n instance. [installed_nodes](#installed_nodes) lists each individual node. `installed_packages` lists npm packages, which may contain more than one node.
|
|
|
|
### migrations
|
|
|
|
A log of all database migrations. Read more about [Migrations](https://github.com/typeorm/typeorm/blob/master/docs/migrations.md){:target=_blank .external-link} in TypeORM's documentation.
|
|
|
|
### role
|
|
|
|
The available user roles and scopes in n8n. One user may have several roles: for example, a global instance member may also be a workflow owner.
|
|
|
|
### settings
|
|
|
|
Records custom instance settings. These are settings that you can't control using environment variables. They include:
|
|
|
|
* Whether the instance owner is set up
|
|
* Whether the user chose to skip owner and user management setup
|
|
* License key
|
|
|
|
### shared_credentials
|
|
|
|
Maps credentials to users.
|
|
|
|
### shared_workflow
|
|
|
|
Maps workflows to users.
|
|
|
|
### tag_entity
|
|
|
|
All workflow tags created in the n8n instance. This table lists the tags. [workflows_tags](#workflows_tags) records which workflows have which tags.
|
|
|
|
### user
|
|
|
|
Contains user data.
|
|
|
|
### variables
|
|
|
|
Store [variables](/code/variables/).
|
|
|
|
### webhook_entity
|
|
|
|
Records the active webhooks in your n8n instance's workflows. This isn't just webhooks uses in the Webhook node. It includes all active webhooks used by any trigger node.
|
|
|
|
### workflow_entity
|
|
|
|
Your n8n instance's saved workflows.
|
|
|
|
### workflow_history
|
|
|
|
Store previous versions of workflows.
|
|
|
|
### workflow_statistics
|
|
|
|
Counts workflow IDs and their status.
|
|
|
|
### workflows_tags
|
|
|
|
Maps tags to workflows. [tag_entity](#tag_entity) contains tag details.
|
|
|
|
## Entity Relationship Diagram (ERD)
|
|
|
|
|
|
|
|
<!-- vale on -->
|