Serializable Snapshot Isolation

Serializable Snapshot Isolation (SSI) is a database method that ensures multiple transactions (groups of database operations) happen as if they were executed one after another, preventing conflicting changes. It uses snapshots—consistent views of data at a specific moment—to allow concurrent reads and writes without interference. If conflicts arise that could break the illusion of sequential order, SSI detects and prevents them, maintaining data integrity. This approach offers high concurrency and performance while guaranteeing the accuracy and consistency of the database as if transactions were executed sequentially.