mysq transaction

It is said that there are several types of transactions
1. Flat transaction
2. Flat transaction with save points
3. Chain transaction
4. Nested transaction
5. Distributed transaction
I would like to know how these transaction types are used in actual projects What are the examples? I hope to give you some examples in production so that I can write them myself, simulate them, and have a better understanding of transactions, because I have never written transactions.

I hope you can provide some suggestions, information, etc. for business learning

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It is said that there are several types of transactions
1. Flat transaction
2. Flat transaction with save points
3. Chain transaction
4. Nested transaction
5. Distributed transaction
I would like to know how these transaction types are used in actual projects What are the examples? I hope to give you some examples in production so that I can write them myself, simulate them, and have a better understanding of transactions, because I have never written transactions.

Hope you can provide some suggestions, information, etc. for business learning