title: Mapping the fields of two database tables
body: <p>The scenario is that, I have 2 database tables A and B. The table B is an upgraded version of the table A. (ie It might possibly have different field names and some extra fields). I need to compare these 2 tables to inform the user about these extra fields and propose to him a mapping of the fields between the tables.</p>
  <p>Currently I am thinking of comparing them using info like field name, data element and domain in that order.</p>
  <p>Is there a standard way to do this? Thanks in advance.</p>
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