Question

क्या आप जानते हैं सभी स्कूल में आपने छात्रों का data क्यों store करते हैं​

Answer 1

because of attendance , and exam attendances on the basis of that we will get marks ,:).... that's why they are giving roll number for each every student :)..

and maintain every student name and roll number to know who is he or she ? , from which class and divison , and for prizes and wining certificates and many more .. , from my opinion :).. thank you ...