SQL - Transactions and Data Integrity
Why does setting the isolation level to READ UNCOMMITTED often cause dirty reads?
Why does setting the isolation level to READ UNCOMMITTED often cause dirty reads?
medium📝 Debug Q7 of 15
Step-by-Step Solution
Solution:
Step 1: Define dirty reads
Dirty reads happen when a transaction reads uncommitted data from another.Step 2: Match READ UNCOMMITTED behavior
This level allows reading uncommitted changes, causing dirty reads.Final Answer:
Because it allows reading uncommitted changes -> Option AQuick Check:
READ UNCOMMITTED allows dirty reads [OK]
Quick Trick: READ UNCOMMITTED reads uncommitted data [OK]
Common Mistakes:
- Thinking it locks rows
- Assuming it prevents writes
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