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Introduction to Database Systems by ITL Education Solutions Limited

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CHAPTER 11

DATABASE RECOVERY SYSTEM

After reading this chapter, the reader will understand:

  • Types of failures that can occur in a system
  • Caching of disk pages containing data items
  • How system log is maintained during normal execution so that the recovery process can be performed
  • The process of checkpointing, which helps in reducing the time taken to recover from a crash
  • The two categories of recovery techniques, namely, log-based recovery techniques and shadow paging
  • The further classification of log-based techniques into two types, namely, techniques based on deferred update and techniques based on immediate update
  • Recovery of a system with multiple concurrent transactions
  • ARIES recovery algorithm
  • Recovery of a system from catastrophic failures ...

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