Question: What is a database transaction? Give two examples. What is meant by ACID? Explain each part briefly. What is a deadlock? Why does it happen?

What is a database transaction? Give two examples.
What is meant by ACID? Explain each part briefly.
What is a deadlock? Why does it happen? How to resolve it?
What is meant by Implicit and explicit transactions? Give examples.
What is a scheduler? What role does it play?

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