Custom user information view and additional fields from other sources

Hello cloud of wisdom :-)

I was wondering if, using FIM 2010 R2 portal, this is possible:

1) Modifying the "User view" where the users can see and modify their attributes to limit what attributes they see and what attributes they are able to modify 

and 

2) If that view code can be modified to include information from other data sources, like information coming from an application that stores some assets information in SQL.

I have been playing around he customization document and settings for the FIM portal but I could not find this.

Thanks in advance!

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