Which of the following is the correct SQL command to set the transaction isolation level to SERIALIZABLE in PostgreSQL?

easy📝 Syntax Q12 of 15

PostgreSQL - Transactions and Concurrency

ASET TRANSACTION ISOLATION LEVEL SERIALIZABLE;

BSET ISOLATION LEVEL = SERIALIZABLE;

CBEGIN TRANSACTION ISOLATION SERIALIZABLE;

DSET TRANSACTION LEVEL SERIALIZABLE;

Step-by-Step Solution

Solution:

Step 1: Recall correct syntax for setting isolation level
The correct syntax is SET TRANSACTION ISOLATION LEVEL followed by the level name.
Step 2: Check each option
SET TRANSACTION ISOLATION LEVEL SERIALIZABLE; matches the correct syntax exactly. Others have incorrect keywords or missing parts.
Final Answer:
SET TRANSACTION ISOLATION LEVEL SERIALIZABLE; -> Option A
Quick Check:
Correct SET TRANSACTION syntax = SET TRANSACTION ISOLATION LEVEL SERIALIZABLE; [OK]

Quick Trick: Use full phrase: SET TRANSACTION ISOLATION LEVEL [OK]

Common Mistakes:

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