There are certain objects in the world that act as containers that are disposed once used. In a system this containers have a reference. In this cases usually there is a a one to one relationship between the container (place) the object it contains (thing with its own reference) and is stamped with the date it was used (MI). In such cases one need to choose which color better caracterizes the concept as it can have any color.

It happens all the time if you think about. In the example above I would choose a Green Color as the I would concider the concept as a packaged product with composite key (ref of the container + ref of tht thing it contains).

A less abstract example? Take for instance you body, is a place for human organs and lives for a period of time.

Nuno

On 2/2/07, michal_matula <michal_matula@...> wrote:

Hi Nuno,

thanks for the examples. I think it makes things clearer.
What I am not sure about is - did you say that the same class can be
of different "colors" in the same system? How would you cope with
that if you followed the recommendations and model using colored
sticky-notes? :-)
I can understand that what is for one MI a "Place" may be a "Thing"
for other MI (still keeping the green color though) but it is hard
for me to see the same class acting as a Place and MI for instance.

Thanks again anyway.

Regards

Michal

--- In colormodeling@yahoogroups.com, "Nuno Lopes" <nbplopes@...>
wrote:
>
> "Could you please post an example of those three for let's
say "sendE-
> Mail" MI class?
> I can imagine that "Message" could be a thing here, "DeliverTo"
> could be a party....what is the place here?"
>
> Example:
>
> 1) First Part
> [Person] - Comprises the personal name and other personal
identification
> [Place] - Information regarding where the person is (Office, Home,
etc)
> [MI] - Contact Information (It's an MI as contact information can
change
> along time and you want to track it)
>
> 2) Second Part
> [Role] - Email Address (Role of Contact Information in an Message
> transaction, The MI becomes a Place)
> [Role] - Sender (The Role of a Person in a Message Transaction)
> [Role] - Receiver (The Role of in Message transaction)
> [MI] - Message (The Subject)
> [Role] - Message Body.
> [Thing] - Peace of Text
>
>