title: Can a Primary key column accept the Null value? I'm using sqlite studio for learning and it accepts
body: <p>Can a Primary key column accept the Null value? I'm using SQLiteStudio for learning and it accepts.</p>
  
  <p>It is accepting multiple null values in the table of 5 columns, where the following query is executed:</p>
  
  <pre><code>Insert into EmployeeDB (Name, Age)
  Values ('Raja3', '85');
  </code></pre>
  
  <p>Here 2 columns are given a value, so all other columns are updated as Null in which one column is defined as PRIMARY Key and one as UNIQUE.</p>