What isolation level prevents dirty reads, non-repeatable reads, and phantom reads?

SQL Fundamentals Hard

SQL Fundamentals — Hard

What isolation level prevents dirty reads, non-repeatable reads, and phantom reads?

Key points

  • SERIALIZABLE prevents concurrent transactions from affecting each other's data.
  • REPEATABLE READ allows phantom reads.
  • READ COMMITTED allows non-repeatable reads.
  • SNAPSHOT provides a consistent view of the database at a specific point in time.

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