What are the ACID properties in SQL with examples?

What are the ACID properties in SQL?

ACID stands for Atomicity, Consistency, Isolation, and Durability. These properties ensure reliable transactions in SQL databases.

Can you give me an example of Atomicity?

Sure! Atomicity ensures that a transaction is all-or-nothing. For instance, if you transfer money from one account to another, both debit and credit operations must succeed; otherwise, the transaction is rolled back.

What about Consistency?

Consistency ensures that a transaction brings the database from one valid state to another. For example, if a bank account balance cannot go negative, a transaction that would result in a negative balance will be aborted.

How does Isolation work?

Isolation ensures that transactions are executed independently. For example, if two transactions are happening simultaneously, Isolation prevents them from interfering with each other, ensuring that each transaction sees a consistent view of the database.

And what is Durability?

Durability guarantees that once a transaction is committed, it will remain so, even in the event of a system failure. For instance, if a transaction is completed and the system crashes, the changes will still be saved.