Problem with saving a Database Diagram, SQL SERVER 2008

hi Experts,

               In my database there are four tables. I have created a Database diagram for
my database and making relationship with them, when i try to save the database diagram ,it is showing a message to me.

I have attached the screen shot for your review.

can you explain me, what is the reason behind it to showing this type of messages to me.
LVL 22
Tapan PattanaikSenior EngineerAsked:
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RiteshShahConnect With a Mentor Commented:
you have to check off one check box from Tools-Option. look at screen shot attached.

Tapan PattanaikSenior EngineerAuthor Commented:
thanks Ritesh.

have a great evening

Tapan Pattanaik
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