title: Which is best and easy way to program and show many-to-many relationship in database
body: <p>I have two quantities Cat A , CatB</p>
  
  <p>Now the items in Cat A can belong to many items in CatB.
  and CatB will also have many Items from Cat A.</p>
  
  <p>I thinking of having Table1 for Cat A , Table2 for CatB and Table C for relation ship.</p>
  
  <p>with </p>
  
  <pre><code>PK-A  , PK-B
  </code></pre>
  
  <p>Is that correct.</p>
  
  <p>How should i make my form in html so that user can select multiple values.
  Currently i am using select box</p>
  
  <p>Any ideas?</p>