<p>If a record is defined as:</p>
<p>-record(shop, {item, quantity, cost}).</p>
<p>and several records are stored in an Mnesia table, and a few months later the structure is changed to :<br />-record(shop, {item, quantity, source, company, cost}).</p>
<p>Do we need to migrate ALL existing records in the DB to include the additional 2 elements in the tuple? I know that a record is actually a tuple. If we leave the existing records untouched, will the database get messed becaues of new records coming in with the new structure?</p>
<p>Thanks,<br />Yash</p>