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Compare the deferred-modification and immediate-modification version of the log-based recovery schemes, in terms of ease of implementation and overhead cost. Choice one version and give
Compare the deferred-modification and immediate-modification version of the log-based recovery schemes, in terms of ease of implementation and overhead cost. Choice one version and give an example usage with detail. (Immediate Update: As soon as a data item is modified in cache, the disk copy is updated. Deferred Update: All modified data items in the cache is written either after a transaction ends its execution or after a fixed number of transactions have completed their execution.)
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