Student ID vs. Student SNO: What's the Difference?

Not entirely correct. 'student_id' and 'student sno' can both be used to represent a student's unique identifier, but they are not exactly the same. 'student_id' is a unique numerical identifier assigned to each student in a database, while 'student sno' is the student's school ID number, typically assigned by the school and determined upon enrollment. Therefore, 'student sno' is a natural identifier for the student, while 'student_id' is a system-generated identifier.