I am trying to create a composite primary key in a project the attributes are here Salaryid Month Year These are the attributes of composite PK if only year is repeated but month and id are not repeated so is it a right composite PK or not?

How do I create Composite primary key in My SQL

Created Sep 23, 2022 Edited Sep 23, 2022

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I am trying to create a composite primary key in a project the attributes are here

These are the attributes of composite PK if only year is repeated but month and id are not repeated so is it a right composite PK or not?