Question

Compare The Shadow-paging Recovery Scheme With The Log-based Recovery Schemes In Terms Of Ease Of Implementation And Overhead Cost?

Answer 1

Answer: Comparison of shadow paging recovery scheme with log based recovering scheme is:-

Explanation: The search time for the scheme is very time consuming.

In shadow paging system, the output of overhead of log cost output is eliminated, and recovery from crashes are significantly getting faster since no undo or redo.operations are needed.

The single transaction commit of every transaction by using shadow paging, multiple blocks output is required for the same.

Answer 2

Explanation:

Shadow paging is a system where atomicity and durability is provided to the database system. A shadow page is deployed when a page needs to be modified. The technique that shadow paging follows is copy-on-write. Shadow paging comes with a database that is made up of a number of fixed size disk pages. Shadow paging is an alternative to log-based recovery techniques which requires lesser disk access.