why only one primary key in a table?
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bc it uniquely identifies each record in a database table...
aryan24281:
who the fu*k are you to say bc . u MC.
ohhhh that means because
U LF
Answered by
1
Hey friend !!
Here is your answer.
Primary key uniquely identifies an item in the table.
Only one primary key is there in a table because it is used for a special identify only.
For example : There may be two person with the same name but no two person with the same ID number.
So we set the ID number as primary key.
Hope it helps.
#pragya_singh
Here is your answer.
Primary key uniquely identifies an item in the table.
Only one primary key is there in a table because it is used for a special identify only.
For example : There may be two person with the same name but no two person with the same ID number.
So we set the ID number as primary key.
Hope it helps.
#pragya_singh
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