Program Explanation Program: //Main.java //definition of main class public class Main { //main method public static void main(String[] args) { /* create a ShiftSupervisor object and pass the value*/ ShiftSupervisor s = new ShiftSupervisor("William", "234-B", "10-24-2004", 54000.0, 7000.0); // display the data System.out.println("Here's the first shift supervisor."); System.out.println(s); // create a ShiftSupervisor object ShiftSupervisor s2 = new ShiftSupervisor(); //set the values s2.setName("Jack"); s2.setEmployeeNumber("875-U"); s2.setHireDate("05-18-2004"); s2.setSalary(65000.0); s2.setBonus(7500.0); // display the data System.out.println("\nHere's the second shift supervisor."); System.out.println(s2); } } // Employee.java //definition of "Employee" class public class Employee { //declare the variables private String name; private String employee_Number; private String hire_Date; //constructor public Employee(String n, String a, String d) { //set the value name = n; //call the method setEmployeeNumber(a); //set the date hire_Date = d; } //constructor public Employee() { //set the variable as null name = ""; employee_Number = ""; hire_Date = ""; } //definition of "setName" method public void setName(String n) { //set the name name = n; } //definition of "setEmployeeNumber" method public void setEmployeeNumber(String e) { //check the condition if (isValidEmpNum(e)) //set the variable employee_Number = e; else employee_Number = ""; } //definition of "setHireDate" method public void setHireDate(String h) { //set the variable hire_Date = h; } //definition of "getName" method public String getName() { //return statement return name; } //definition of "getEmployeeNumber" method public String getEmployeeNumber() { //return statement return employee_Number; } //definition of "getHireDate" method public String getHireDate() { //return statement return hire_Date; } //definition of "isValidEmpNum" method private boolean isValidEmpNum(String e) { //declare the variable with a value boolean status = true; //check the condition if (e...

Starting Out with Java: From Control Structures through Data Structures (4th Edition) (What's New in Computer Science)

4th Edition

ISBN: 9780134787961

Author: Tony Gaddis, Godfrey Muganda

Publisher: PEARSON

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Given a relation schema R = (A, B, C, D, E,G) with a set of functional dependencies F {ABCD BC → DE B→ D D→ A}. (a) Show that R is not in BCNF using the functional dependency A → BCD. (b) Show that AG is a superkey for R (c) Compute a canonical cover Fc for the set of functional dependencies F. Show your work. (d) Give a 3NF decomposition of R based on the canonical cover found in (c). Show your work. (e) Give a BCNF decomposition of R using F. Show your work.

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Starting Out with Java: From Control Structures through Data Structures (4th Edition) (What's New in Computer Science)

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