I can't see the subject and body's columns of ActivityMimeAttachment on the SQL server in Dynamics CRM.

Hi Experts,

I searched subject and body's columns on the SQL sever using  SQL management studio  in Dynamics CRM. environment but  I couldn't find this columns even if  there is this information as below.

https://msdn.microsoft.com/en-us/library/gg328344.aspx

By the way, I imported table of  ActivityMimeAttachment using ODBC  databse on the MS ACCESS2013 and then finally I could find the above fields....why?

My questions are

1. Why Can't I  see subject and body fields on the SQL serverxxx management studio in DCRM ?

2. Does DCRM tables has tables having invisilbe coumns except for  this ActivityMimeAttachment 'table?

Thanks