10 Questions
What is the main purpose of serializability in DBMS?
To identify nonserial schedules that are correct and maintain database consistency
In the context of transaction processing, what is a serializable schedule?
A schedule where all transactions occur sequentially
What does a serial schedule guarantee in terms of transaction execution?
Sequential execution of transactions
How is a non-serial schedule classified based on serializability?
Into serializable and non-serializable schedules
In what scenario is a non-serial schedule considered serializable?
When it is equivalent to the serial schedule of the same transactions
What characteristic distinguishes a serializable schedule from a non-serializable one?
The order of transaction execution
How does a serial schedule ensure database consistency?
By only starting a transaction when the previous one has finished
What is an invalid scenario for a nonrecoverable schedule?
A schedule where a transaction reads a value written by an uncommitted transaction
What is the key characteristic of a recoverable schedule?
It does not allow for dirty reads
How does a precedence graph help in identifying conflicts between transactions?
By showing dependencies between transactions
Test your knowledge on the recoverability of schedules in transaction processing. Learn about handling failed transactions, rollbacks, and maintaining data consistency in case of software issues, system crashes, or hardware failures.
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