Each of a pair of transactions has read data that is written by the other, but there is no data written by both transactions, is referred to as

Related MCQs

•                      are used to ensure that transactions access each data item in order of the transactions’          if their accesses conflict.
• A condition that occurs when two transactions wait for each other to unlock data is known as a(n)
• The file organization which allows us to read records that would satisfy the join condition by using one block read is
• The file organization which allows us to read records that would satisfy the join condition by using one block read is
• A(n) ____ lock exists when concurrent transactions are granted Read access on the basis of a common lock.
• One aspect that has to be dealt with by the integrity subsystem is to ensure that only valid values can be assigned to each data items. This is referred to as
• A concurrency-control policy such as this one leads to              performance since it forces transactions to wait for preceding transactions to finish before they can start.
• Which of the following has each related entity set has its own schema and there is an additional schema for the relationship set?
• Which of the following has each related entity set has its own schema and there is an additional schema for the relationship set.
• Which of the following has each related entity set has its own schema and there is an additional schema for the relationship set.