Distributed Transaction
Q.1: Explain why distributed transactions are necessary in distributed transactions?
Answer:
Distributed transactions are needed in order to maintain the integrity and consistency of data access the multiple data resources such as repositories or databases connected in a same network. Distributed transactions coordinates the operations across multiple resources.
Q.2: What happens if any participating resource fails during a distributed transaction?
Answer:
If any participating resource fails during the transaction, the coordinator of transaction detects this failure and then initiates proper recovery mechanisms. Mechanisms it can involve includes resending the transaction to some other alternative available, abortion of transaction, and retrying the operation on same failed resource.
Q.3: What are the goals of distributed transactions?
Answer:
The main aim of Distributed Transactions is to maintain the durability, atomicity, isolation and fault tolerance.
Q.4: What is the role of the transaction coordinator in distributed transactions?
Answer:
The transaction coordinator in distributed systems is responsible for initiating and then coordinating the transaction for its succesful completion. It makes sure that all the resources involved in the transaction are working.
What is a Distributed Transaction?
A distributed transaction is defined as a group of operations that are to be performed across more than one database or data repository. The operations are performed by multiple nodes that are connected to a single network. The distributed transaction ensures ACID (Atomicity, Consistency, Isolation, Durability) properties and data integrity.
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