Chapter 15:Transactions Transaction Concept Transaction state Concurrent Executions Serializability Recoverability Implementation of Isolation Transaction Definition in SQL Testing for Serializability. Database System Concepts-5th Edition,Sep 10,2005. 15.2 @Silberschatz,Korth and SudarshanDatabase System Concepts - 5 15.2 ©Silberschatz, Korth and Sudarshan th Edition, Sep 10, 2005. Chapter 15: Transactions Transaction Concept Transaction State Concurrent Executions Serializability Recoverability Implementation of Isolation Transaction Definition in SQL Testing for Serializability