$4.)$ Lastly add $2$ functions to your Student class, updateDB$()$ and deleteDB$().$ These functions will update and delete student data in the database.

Testing Code in Main$0$ method $$

Student s$3=$ new Student$()$;

s$3.$selectDB$(6)$;

s$3.$deleteDB$()$;

And

Student $s4=$ new Student $()$ ;

s$4.$selectDB$(7)$;

$//$change any property in the student object s$4$

$//$the example below changes the lastname

$//$but you could change email, or gpa as well

s$4.$setLastname$("$Smith$")$;

$//$s$4.$updateDB$()$; send any changes to the DB

s$4.$updateDB$()$;