The magical rowtype of PL/SQL in INSERT and UPDATE statements

The RowType types in PL/SQL are very useful and flexible, and now find RowType in INSERT and UPDATE statements that can save a lot of code, especially when it comes to copy and update. In Google's search results, I look at the foreign language to see the dizzy dizzy when found, surprise Ah! There is no such book in the Oracle's official website, and I don't know how.

Declare
V_dept Dept%rowtype;
Begin
V_dept.deptno: = 60;
V_dept.dname: = ' sample ';
V_dept.loc: = ' Chicago ';
INSERT INTO dept values V_dept;
End

Declare
V_dept Dept%rowtype;
Begin
V_dept.deptno: = 60;
V_dept.dname: = ' sample2 ';
V_dept.loc: = ' Dallas ';
Update Dept set row=v_dept where Deptno=v_dept.deptno;
End

The magical rowtype of PL/SQL in INSERT and UPDATE statements