Understanding Database

By default, n8n uses SQLite as the database. The credentials, workflows, executions, and webhook are decoupled and store in different tables.

Credentials Entity

The credentials get stored in the credentials_entity table with the following fields.

Column Name	Data Type	Description
id	INTEGER	auto-incremented and unique for each row
name	VARCHAR	stores the name of the credentials given by the user
data	Text	stores the encrypted data
type	VARCHAR	refers to the credential type used by the node
nodeAccess	TEXT	stores the information of the nodes that have access to these credentials
createdAt	DATETIME	stores the date and time when a credential gets created
updatedAt	DATETIME	stores the date and time when a credential gets updated

The saved workflows get stored in the workflow_entity table with the following fields.

Column Name	Data Type	Description
id	INTEGER	auto-incremented and unique for each row
name	VARCHAR	stores the name of the workflow given by the user
active	BOOLEAN	stores the information about the active state of the workflow (1=active)
nodes	TEXT	stores the information about nodes and their configurations in a workflow
connections	TEXT	stores the connection information between nodes in a workflow
createdAt	DATETIME	stores the date and time when a workflow gets created
updatedAt	DATETIME	stores the date and time when a workflow gets updated
settings	TEXT	stores the information about additional settings of a workflow
staticData	TEXT	stores the static data of the workflow

The information of active webhooks gets stored in the webhook_entity table with the following fields.

Column Name	Data Type	Description
workflowId	INTEGER	stores the ID of the workflow
webhookPath	VARCHAR	stores the webhook path
method	VARCHAR	stores the information about the HTTP Method
node	VARCHAR	stores the name of the trigger node

The information of the migrations that ran gets stored in the migrations table with the following fields.

Column Name	Data Type	Description
id	INTEGER	auto-incremented and unique for each row
timestamp	BIGINT	stores the timestamp when the migration ran
name	VARCHAR	store the name of the migration that ran