Hi, as my understanding, in PG level, IOs are execute in a sequential way,
such as the following cases:

Case 1:
Write A, Write B, Write C to the same data area in a PG --> A Committed,
then B committed, then C.  The final data will from write C. Impossible
that mixed (A, B,C) data is in the data area.

Case 2:
Write A, Write B, Read C to the same data area in a PG-> Read C will return
the data from Write B, not Write A.

Are the above cases true?

thanks.
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