Which of the following is a method for concurrency control in distributed databa
Practice Questions
Q1
Which of the following is a method for concurrency control in distributed databases?
Two-phase locking
Data sharding
Indexing
Data warehousing
Questions & Step-by-Step Solutions
Which of the following is a method for concurrency control in distributed databases?
Correct Answer: Two-phase locking
Step 1: Understand what concurrency control means. It is a way to manage how multiple transactions access the same data at the same time.
Step 2: Learn about distributed databases. These are databases that are spread across multiple locations or servers.
Step 3: Identify the problem. When many transactions happen at once, they can conflict with each other, leading to errors.
Step 4: Know that two-phase locking is a solution. It is a method used to control access to data in a way that prevents conflicts.
Step 5: Understand how two-phase locking works. It has two phases: the first phase is when a transaction can lock data to prevent others from accessing it, and the second phase is when it releases the locks.
