it is possible for the database that a certain id number will handle or occupy 2 or more rows and then when it called it will take both rows like on the picture .Click Here

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Use student id as the primary link to link to another table. Then you can create as many rows as you want for that student id.

but i dont know how to link them, can u help me?

What @iamthwee is telling you to do is that you have to create 1+ tables that will link with the student ID to your students table.

Please reffer to this link JOINS

thank you so much ! i can now understand it ...

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