Fuction to change names

Question

I have two tables
student
NAME STUDENT_NUMBER CLASS MAJ
Smith 17 1 CS
Brown 8 2 CS
and
grade_report
STUDENT_NUMBER NAME SECTION_IDENTIFIER G GPOINT
17 Smith 112 B 3
17 Smith 119 C 2
8 Brown 85 A 4
8 Brown 92 A 4
8 Brown 102 B 3
I need function that when i change names in student table....directly this function changes student names in grade_report

Answer 1

Trigger is some thing like that.
SQL> select * from student;
NAME                 STUDENT_NUMBER
bbb                              10
SQL> select * from grade_report;
NAME                 STUDENT_NUMBER      MARKS
bbb                              10        100
SQL>
SQL> create or replace trigger student_name_update_trg
  2  after update
  3  on student
  4  for each row
  5  begin
  6     update grade_report
  7     set
  8             name = :new.name
  9     where
10             student_number = :new.student_number;
11  end;
12  /
Trigger created.
SQL>  update student set name = 'bca';
1 row updated.
SQL> select * from student;
NAME                 STUDENT_NUMBER
bca                              10
SQL> select * from grade_report;
NAME                 STUDENT_NUMBER      MARKS
bca                              10        100
SQL>