العيسري33

create table student(studid number primary key,studname varchar2(20),mark1 number,mark2 number,mark3 number); Q1. how to create a function that will accept the three marks of student and will determine and return the average mark to the calling block

create table student(studid number primary key,studname varchar2(20),mark1 number,mark2 number,mark3 number); Q1.how to create a function that will accept the three marks of a student and will determine and return the average mark to the calling block.