noun
change dump
Computing term for a dump of only the changed data, often used in database or system backup contexts.
データベースの変更域ダンプを定期的に取得する。
We periodically take a change dump of the database.
Differential backup; similar concept but 変更域ダンプ is more technical and often used in mainframe or database contexts.
Compound of 変更域 (change area/region) and ダンプ (dump), a direct borrowing of the English computing term 'change dump'.