Difference between In Memory and Tempdb

          In Memory                                                               Tempdb

1. Holds data temporarily in client or             1. Holds data temporarily in database

      server

2. These tables can't store in the database      2.These tables can store in the database.  

             .

3. Can't apply security.                                  3. Can apply security.   

Difference between ms dynamics 2009 and ms dynamics 2012?

1. security start from scratch
2. eliminate all EDT relations, and translate it to refrecID.
3. all journal posting classes have split-up in a validate, post and print class. so you have to split your customizations
4. Forms, go back to the defaults, first add your fields to existing field groups. otherwise create new field groups.
5. every code deserved his performance. generic solutions are slow, dedicated are fast.....
6. use the security profile tool, it is on information source.