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you can see from our previous discussion that buffer management plays a key role in talking about recovery atomicity and durability we tried having a no steal policy thatamp;#39;s the terminology used in the literature we didnamp;#39;t allow buffer pool frames with uncommitted updates to be replaced or otherwise flushed to disk and this is we thought useful for achieving atomicity without needing to be able to undo stuff so we didnamp;#39;t need undo logging because we would never rate anything we would want to undo one of the problems with the no steal policy is it can cause poor performance because these pinned pages limit buffer replacement as we discussed we also try to force policy thatamp;#39;s terminology from the literature when we made sure that every update is forced on to the database disk before commit so we didnamp;#39;t commit until all the pages of the transaction were forced down to the database disk and this provided durability and we didnamp;#39;t need any redo
