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What is Database Recovery Mechanisms Explained about?

The document summarizes database recovery from transaction and system failures. It discusses four main types of recovery algorithms: undo/redo, undo only, redo only, and no logging. The undo/redo algorithm recovers the last consistent state by first undoing failed transactions using before images in the log, then redoing committed transactions using after images in the log.

Author

Sameer023

Language

EN