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Advanced learning of MySQL -- Fundamentals -- four characteristics of transactions
2022-07-07 00:34:00 【Magic pig 9898】
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 .
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