Question

What is the significance of primary key in establishing relationship among tables ?
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Answer 1

Answer:

87

Explanation:

hy my anwer is really 666

Answer 2

Answer:

hope it helps mark brainliest

Explanation:

A primary key is essential if a table is to qualify as a relational table. It is made up of one or more columns whose data uniquely identifies each row in the table. For example, if the data in the rows contained house numbers, the primary key could be used to identify the streets on which the houses were situated.