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https://surya-digital.com/blog/2025-09-03/transaction-isolation-level-in-postgre-sql Surya Digital - Transaction Isolation Level In PostgreSQL Most developers assume they know what `READ COMMITTED`, `REPEATABLE READ`, and `SERIALIZABLE` really mean, but PostgreSQL’s MVCC engine has a few surprises in... transaction isolation level surya digital postgresql https://news-web.php.net/php.pdo/538 php.pdo: Re: [PDO] PDO transaction isolation level and firebird transaction isolation level php pdo firebird