Is duplicate entry of other attributes are allowed in SQL?

Solution (By Examveda Team)

This question is about how MySQL handles duplicate data in tables.

Think of a table like a spreadsheet. Each row in the table represents a single piece of information, like a student's record. Each column in the table represents a specific characteristic of that information, like the student's name, age, or grade.

Now, imagine you have a table for students. One column is named "Student ID" and it is designed to be unique for every student. This means no two students can have the same Student ID.

Other columns, like "Name" or "Grade", might allow duplicate entries. For example, two students might have the same name or be in the same grade.

So the answer to the question is: It depends!

If the column is set up to have unique values, like a "Student ID" column, then duplicate entries are not allowed. If the column is not set up to be unique, then duplicate entries are allowed.

Therefore, the correct answer is Option C: Depends.