In my application there is vendor who comment when submitting a form and when it comes towards reviewer the reviewer comment again.So I want to show it as history what vendor commented and what reviewer commented.
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you can implement using another table comment. In which columns are PK, FK, comment, comment_type, created_by, created_on, is_latest. Every time a comment is written then save it as a new row. In case if comment is null don`t write in database.