scheme that records only information about dirty pages and associated information and does not even require of writing dirty pages to disk.

Related MCQs

•                        determines which transactions to undo, which pages were dirty at the time of the crash, and the LSN from which the redo pass should start.
• The                          scheme uses a page table containing pointers to all pages; the page table itself and all updated pages are copied to a new location.
• There are “record-once” versions of the compact disk and digital video disk, which can be written only once; such disks are also called                      disks.
• The                                policy, allows a transaction to commit even if it has modified some blocks that have not yet been written back to disk.
• The                        policy, allows the system to write modified blocks to disk even if the transactions that made those modifications have not all committed.
• Hybrid disk drives are hard-disk systems that combine magnetic storage with a smaller amount of flash memory, which is used as a cache for frequently accessed data.
• ARIES uses a                        to identify log records, and stores it in database pages.
• A special redo-only log record < Ti, Xj, V1> is written to the log, where V1 is the value being restored to data item Xj during the rollback. These log records are sometimes called
• Does index take space in the disk?
• In magnetic disk                  stores information on a sector magnetically as reversals of the direction of magnetization of the magnetic material.