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Which of the following is a method for concurrency control in distributed databa

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Question: Which of the following is a method for concurrency control in distributed databases?

Options:

  1. Two-phase locking
  2. Data sharding
  3. Indexing
  4. Data warehousing

Correct Answer: Two-phase locking

Solution: 

Two-phase locking is a method for concurrency control in distributed databases that helps prevent conflicts when multiple transactions access the same data.

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?
  1. Two-phase locking
  2. Data sharding
  3. Indexing
  4. 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.
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