Question

create a student table with studentid , name, and marks as attributes where the student id is the primarykey in sql

Answer 1

Answer:

Attribute Stu_Id alone is a primary key as each student has a unique id that can identify the student record in the table. Note: In some cases an attribute alone cannot uniquely identify a record in a table, in that case we try to find a set of attributes that can uniquely identify a row in table.

Answer 2

Answer:

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Explanation:

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