What are the different SQL transaction isolation levels?
An example of an AI chatbot conversation about SQL transaction isolation levels.
What are the different SQL transaction isolation levels?
SQL transaction isolation levels define how transaction integrity is visible to other transactions. The main levels are: 1. Read Uncommitted 2. Read Committed 3. Repeatable Read 4. Serializable.
Can you explain what Read Committed means?
Read Committed is an isolation level where a transaction can only read data that has been committed. This prevents dirty reads but allows non-repeatable reads.
What about Serializable? How is it different?
Serializable is the highest isolation level. It ensures complete isolation from other transactions, meaning no other transactions can read or write data until the current transaction is complete.
Which isolation level is the best for performance?
Read Uncommitted offers the best performance but at the cost of data integrity. The best choice depends on your application's needs.
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