Review the sample database.

Explanation

When databases need to store files internally, they make use of BLOBs or Binary Large Objects.

BLOBs are used when the data is not easily defined or not typical, so BLOBs can basically be used to store anything. The embedded JPG file most likely stores the image associated with the contact for this application.

The file header of FF D8 indicates a JPEG image is being stored in this BLOB.