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lesya692 [45]
3 years ago
11

Write down the situations in which you think primary key will be helpful?

Computers and Technology
1 answer:
Romashka [77]3 years ago
3 0

Answer:

The SQL PRIMARY KEY is a column in a table that must contain a unique value that can be used to identify each and every row of a table uniquely. Functionally, it is the same as the UNIQUE constraint, except that only one PRIMARY KEY can be defined for a given table.

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Grades
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93

82

Total
275

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