Which of the following is a characteristic of a non-serial schedule?All transactions are executed sequentiallyTransactions are executed concurrently or interleavedIt provides the highest level of isolationIt always leads to conflicts and data inconsistencies
Question
Which of the following is a characteristic of a non-serial schedule?All transactions are executed sequentiallyTransactions are executed concurrently or interleavedIt provides the highest level of isolationIt always leads to conflicts and data inconsistencies
Solution
The characteristic of a non-serial schedule is that transactions are executed concurrently or interleaved. Unlike a serial schedule where all transactions are executed one after the other, in a non-serial schedule, operations from different transactions can be mixed. This allows for better utilization of system resources and can lead to increased performance. However, it also introduces the possibility of conflicts and data inconsistencies, which must be managed by the system. It does not necessarily provide the highest level of isolation, as this depends on the specific concurrency control techniques used.
Similar Questions
A schedule S is conflict serializable if it is conflict equivalent to a _________ schedulea)serialb)recoverablec)strictd)non seriale)cascadeless
Consider the following transactions with data items P and Q initialized to zero:T1: read (P) ;read (Q) ;if P = 0 then Q : = Q + 1 ;write (Q) ;T2: read (Q) ;read (P) ;if Q = 0 then P : = P + 1 ;write (P) ;Any non-serial interleaving of T1 and T2 for concurrent execution leads toA serializable scheduleA schedule that is not conflict serializableA conflict serializable scheduleA schedule for which a precedence graph cannot be drawn
n the context of database schedules, what is a "serial schedule"?A schedule where transactions are executed concurrentlyA schedule where transactions are executed sequentially, one after the otherA schedule that allows transactions to roll back their changesA schedule that includes both read and write operations
A schedule is called __________ if it is conflict equivalent to a serial schedule.Conflict serializableConflictingNon serializableNone of the mentioned
ERIALIZABILITY IN DBMS Some non-serial schedules may lead to inconsistency of the database. Serializability is a concept that helps to identify which non-serial schedules are correct andwill maintain the consistency of the database
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.