parent database.
To fetch data source rows (i.e. the child pages of a data source) rather than columns, use the Query a data source endpoint.

data_sources for that database. There is often only one data source, but when there are multiple, you may have the ID or name of the one you want to retrieve in mind (or you can retrieve each of them). Use that data source ID with this endpoint to get its properties.
To get a data source ID from the Notion app directly, the settings menu for a database includes a “Copy data source ID” button under “Manage data sources”:

Bearer authentication header of the form Bearer <token>, where <token> is your auth token.
The API version to use for this request. The latest version is 2025-09-03.
2025-09-03 ID of a Notion data source.