> ## Documentation Index
> Fetch the complete documentation index at: https://docs.metriport.com/llms.txt
> Use this file to discover all available pages before exploring further.

# documentreference_content

The document and format referenced; there may be multiple content element repetitions, each with a different format (`DocumentReference.content[]`).

**Primary Keys:**

* documentreference\_content\_id

**Foreign Keys:**

* documentreference\_id - links to the [document reference](/medical-api/handling-data/schema-v100/documentreference/base) table

| Column                         | Data Type | Description                           |
| ------------------------------ | --------- | ------------------------------------- |
| documentreference\_content\_id | varchar   | Unique identifier for the content row |
| documentreference\_id          | varchar   | Parent document reference             |
| attachment\_data               | varchar   | Inline attachment data (e.g. base64)  |
| attachment\_contenttype        | varchar   | MIME type of the attachment           |
| attachment\_creation           | datetime  | When the attachment was created       |
| attachment\_hash               | varchar   | Hash of the attachment content        |
| attachment\_language           | varchar   | Language of the attachment content    |
| attachment\_size               | integer   | Size of the attachment in bytes       |
| attachment\_title              | varchar   | Title of the attachment               |
| attachment\_url                | varchar   | URL of the attachment content         |

**Related Tables:**

**Parent:**

* [documentreference](/medical-api/handling-data/schema-v100/documentreference/base)