Develop a mini-database system to manage employee information. Your database should allow

users to insert, delete, modify and retrieve employee records. Initially all the data in the database

is stored in an external file called office.db. When your database program starts, the data in

the file is loaded into a dynamically created array of employees first. Then a user interacts with

the array during your program execution. When the user decides to exit the program, the data in

the array (with all the current updates) is written into the external file (overwrite existing content).

Here are some information for completing this project.

1. Employee information should include first name, last name, SSN, birth date, Salary.

You should define a class according to below:

class Employee{

string firstName, lastName;

string ssn;

string birthday;

fload salary;

public:

// define contructors

Employee();

Employee(string fn, string ln, string ssn, char g, float s);

// define getter/setter for firstName, lastName, gender, salary

string getFirstName();

string getLastName();

string getSSN();

string getBirthDate();

float getSalary();

void setFirstName(string fn);

void setLastName(string ln);

void setSSN(string s);

void setBirthDate(string bd);

void setSalary(float sal);

}

2. Load/Store employee information. You should read database information from an external

file and store them into an array of employees at the beginning of your program. Before your

program ends, it will save information in the array to the same external file (overwrite its

current content). The external file is called employee.db.

You must implement the following functions to load/store employee information using

external file.

/* read database information from a data file and insert each employee information into an

array and return the pointer to the first element of the array. If the file is empty, or the

creation of Employee array fails, return NULL

*/

Employee* readDatabase(ifstream* & databaseFile);

/* write the information in the Employee array into an external data file.

*/

void writeDatabase(ofstream* & databaseFile, Employee* employeeList);

/* display the information in an array into console.

*/

void printDatabase(Employee* employeeList);