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HOW SHALL WE DIFFERENTIATE BETWEEN PRIMARY KEY AND FORIEGN
KEY?
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Answer Posted / mukhtiar ahmed
primary key
A column (or columns) in a table that makes the row in the
table distinguishable from every other row in the same
table.
foreign key
A column (or columns) in a table that draws its values from
a primary or unique key column in another table. A foreign
key assists in ensuring the data integrity of a table.
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