Computer Science, asked by SunnyDimri, 1 year ago

what is primary key how can we use to maintain in column

Answers

Answered by vanshprajapati
1
PRIMARY KEY is a column in a table which must contain a unique value which can be used to identify each and every row of a table uniquely.primary key is used to identify each row identically in a table. It may be a part of the actual record itself.
but i dont know how to use it
srry
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