Advanced learning of MySQL -- Fundamentals -- four characteristics of transactions

What is business ACID

Atomicity A

Transaction is the smallest unit that cannot be separated

Uniformity C

When the transaction completes , All data must be consistent

Isolation, I

Isolation mechanism of database system , It ensures that transactions can run independently without the influence of external concurrent operations .

persistence D

Once the transaction is rolled back or committed , His changes to the data in the database are permanent .