Question: Consider database variables X and Y , initialized to 1 1 and 2 7 , respectively. Transaction T 1 reads X and writes its value

Consider database variables X and Y, initialized to 11 and 27, respectively. Transaction T1 reads X and writes its value to Y. Transaction T2 reads Y and writes its value to X. What are the possible final results for X and Y after running T1 and T2 at the same time, under the following isolation policies:
1. Read Committed
2. Snapshot Isolation
3. Serializable
Assume that if any transaction is aborted, it will be run again to completion.

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