Assignment 2: Implicit and Explicit Cursors - 4 Marks 1- Using Implicit Cursor, Update the bonus to be equal to 20% of the salary for all Employees working in department 90. Check whether the statement is executed or not, if it is executed successfully, display how many rows affected with this statement. Note: you should use the hr.Employees Table. 2- Using Explicit Cursors, Write and test a PL/SQL block to read and display all the rows in the COUNTRIES table for all countries in region 1 Note: ou You should use the hr. Countries Table