title: create a DB's sequence object without overflow error and without using cycle technique
body: <p>I was wondering how will I be able to store an  infinite number into a sequence Object used in DB without overflow error.</p>
  <p>Suppose we have an array of char with  length 11  named  seq. We start from seq= 00,000,000,000 and each time we  add one step/unit to  it (seq=seq+1).</p>
  <p>e.g.  00,000,000,000 -------     00,000,000,001    .......    99,999,999,999</p>
  <p>If it reaches to 99,999,999,999 and if we increase it just one step/unit ,it will cause an overflow error! but my question here is : how to handle this problem so that we might have a sequence obj  with an infinite value in it.</p>
  <p><strong>note 1</strong>: we don't want to use cycle technique and start from zero again.</p>
  <p><strong>note 2</strong>: length of array  is fixed.</p>