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Answer Posted / saidulu
In PI(Primary Index) also we have 2 types ie (unique
PI ,Non unique PI)
how can we say unique column as primarIndex.If it is
non unique PI means it allows duplicates.
Now i am comming to which column as Primary Index
1.Frequntly using column.
2.Not regularly changing column
(Not at all changing values /rarely)
3.By default it takes as first column as PI
| Is This Answer Correct ? | 7 Yes | 1 No |
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