Attachments, also known as blobs, can be used to administer and serve out arbitrary data with Midgard. This will typically be used for images, sounds, flash movies, etc... and for files available for download.
Attachments can be connected to any kind of resource, and Attachments to Page records will be served out directly based on their name. See Figure 13-1 and Chapter 24.
Blobs are served from the filesystem rather than stored in the database, as this is more efficient.