Primary Key vs Foreign Key: Identifies vs Connects | Venkatesh S posted on the topic | LinkedIn
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Primary Key vs Foreign Key: Identifies vs Connects | Venkatesh S posted on the topic | LinkedIn
A simple way to explain the difference between Primary Key and Foreign Key in interviews:Think of a passport system.A passport number uniquely identifies a person — that is a Primary Key.When you apply for a visa, the visa system stores your passport number again to link the visa application to your passport details. In that table, the ...
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