title: Power Bi: Link Tables
body: <p>In power bi, I have a table <code>Customer</code> in which I am keeping the Id, name and other details of customer. I have another table named <code>Customer_CustomerRole_Mapping</code> which contains CustomerId and its CustomerRoleId. I have another table name <code>CustomerRoles</code> which contains name and id of each role.</p>
  
  <p><code>CustomerRoles</code> and <code>Customer_CustomerRole_Mapping</code> are linked together.</p>
  
  <p>In Power Bi, I want to show customers count role wise in a pie chart? I tried but I am unable to apply linkage between these tables. I am new to Power Bi.</p>