How to insert a symbol from another model type? Load additional symbols?

I created a new model by using the model type "IT infrastructure" and added some of the available 5 symbols in the corresponding "Symbol" pane.

Then I wanted to add a  "database" symbol (=well known "can" icon).

Much to my surprise this important symbol is NOT part of the model type "IT infrastructure.

How can this be?

Well I searched other model types and did NOT find it even in another model types.

How can this be be?

Assume I would have found it in model type "Data model": How can I add these symbols into a diagram of another type?

Can I load (how?) additional symbols into existing ARIS Express installation?

Is there an additional symbol library?

Thank you

Peter