Assignment icon
Icon that shows that one or more models are assigned to an object by an assignment relationship.
You can open assigned models by double-clicking the assignment icon. The assignment icon is displayed if you have disabled the Hide assignment icons option.
The assignment icon may look different and may be placed at different points in the object. The positioning depends on the model template you are using.
You can also assign an assignment icon of your own to a database. It is displayed to the right of the icons.