title: Oracle SQL developer Data modeler - composite keys
body: <p>I am creating entities and am trying to create composite keys as my primary keys in the data modeler.</p>
  <p>However I am not able to do that as I dont know how to. The question is how do I create a composite key in  the data modeler.</p>
  <p>Here is the snapshot:</p>
  <p><a href="https://i.stack.imgur.com/M0Rbg.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/M0Rbg.png" alt="le" /></a></p>
  <p>here is the composite keys I am trying to create.</p>
  <pre><code>  Primary key TBD_ID + TBA_STAGE +  TBA_ASSIGNEEPNO  + TBA_STATUS   combination column, Foreign Key 
    TBD_ID
  </code></pre>
  <p>TBD_ID is the foreign key from T_BPM_Details and I want to add that to T_BPM_Assignee with the following colums to make a composite key as the primary key.</p>
  <p>How do I do that</p>