title: String type in dictionary table column
body: <p>I have an SE11 table with a column of type <code>STRING</code> and I'm wondering how this is stored on the underlying DB system (SAP Hana in this case). </p>
  
  <p>I read that only a reference to the LOB is actually saved in a column typed as <code>STRING</code> and the string itself is saved outside the table. Is this true and does it work the same on Hana? I tried to RTFM but I couldn't find that info.</p>
  
  <p>Is it generally advisable to use <code>CHAR</code> with a specific length whenever possible?</p>