Answer Posted / vignesh muralidharan
Type1: No historical datas will be available, when changes
are made the old data will be deleted and the new data will
be insrted.
Type2: Flag:The old data will be denoted as false and the
new data will be denoted as true.
Version:The changes made will be numbered as 0,1,2...so on.
Date:The changes along with the date in which they are made
are clearly mentioned.
Type3:The latest change which is made is alone available.
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