Oracle/PLSQL: Set TransactionThere are three transaction control functions. These are:1. SET TRANSACTION READ ONLY;2. SET TRANSACTION ISOLATION LEVEL SERIALIZABLE;3. SET TRANSACTION USE ROLLBACK SEGMENT name;Oracle/PLSQL: Lock TableThe syntax for a Lock table is:LOCK TABLE tables IN lock_mode MODE [NOWAIT];Tables is a comma-delimited list of tables.Lock_mode is one of:ROW SHAREROW EXCLUSIVESHARE UPDATESHARESHARE ROW EXCLUSIVEEXCLUSIVE.NoWait...