policy allows multiple updates to accumulate on a block before it is output to stable storage, which can reduce the number of output operations greatly for frequently updated blocks.

Related MCQs

• The                                      contains a list of blocks that have been updated in the database buffer.
• 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.
• The problem of ordering the update in multiple updates is avoided using
•                        refers to the ability of the system to recover committed transaction updates if either the system or the storage media fails.
• If several concurrent transactions are executed over the same data set and the second transaction updates the database before the first transaction is finished, the ____ property is violated and the database is no longer consistent.
•                              which increases the number of I/O operations needed to write a single logical block, pays a significant time penalty in terms of write performance.
• In the buffer where there is no space for another block, the block can be inserted using
• The                is that part of main memory available for storage of copies of disk blocks.
• 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.