Student Record Management

This is the core of the project, where all the basic student record operations happen.

A. Add Student lets the user enter a new student's details, roll number, name, class, age, and phone number, and saves them into the database. The system also checks that the roll number isn't already taken, since it must be unique for every student.

B. View All Students displays every student currently stored in the database, arranged neatly in a table format sorted by roll number, giving a quick overview of the entire class or institution.

C. Search Student lets the user look up a specific student by entering their roll number, instead of scrolling through the entire list to find them.

D. Update Student lets the user modify an existing student's details. If a field is left blank while updating, the system simply keeps the old value unchanged, so there's no need to retype everything.

E. Delete Student removes a student's record completely, along with their related attendance and grade entries, but only after the user confirms the action, to avoid accidental deletions.