A "virtual model" that encapsulates other models?

Hi,

Is it possible to have a model in rails that does not exist as a
database table by itself, but it exists solely by pulling data together
from tables used by other models?

For instance, let’s say I have a model of a “customer” which has_many
“addresses”, of which one of the “addresses” is the default address.

So what I’d like to do is to actually have a model, say
“Shipping_Addresses” that pulls “First name” and “Last name” out from
“customer” and sticks it to the rest of the address details as pulled
from “addresses”.

Is this doable?

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