title: SQL Server Does Not Delete Records
body: <p>I am newbie to MSSQL Server and don't have any knowledge about it.</p>
  
  <p>i have below question.</p>
  
  <p>I have added nine records with same value as show per below image in SQL Server 2005.</p>
  
  <p>i Have not given any primary key to Table.</p>
  
  <p>Now when i selecting one record or multiple record and hit the delete key it does not delete the records from table instead it gives me error.</p>
  
  <p><img src="https://i.stack.imgur.com/KwPjF.png" alt="enter image description here"></p>