Count value between 2 tables

[NithinBN]

Hello,

I have a student and dept table like this having cordinality (1 to *), meaning a student can be part of multiple department. 

How can I find out which all students are linked to a department(count students having link\registered  to department )

Thanks you!

[amitchandak · Accepted solution]

@NithinBN , Use these measures to find students not linked. Plot M2 with Student name

M1= Countrows([Department])

M2= Countx(Values(Student[ID]), if( Isblank([M1]), [ID], blank()) )