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

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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