Summary of PlantUML Class Diagram

The diagram represents an object-oriented class hierarchy using Unified Modeling Language (UML). It consists of the following classes:

1. Person Class (Abstract):
2. An abstract class denoted by an "A" in a circle.

3. Attributes:

   • Id (string)
   • name (string)
   • age (int)

4. Employee Class:

5. Inherits from the Person class.

6. Attributes:

   • Department (custom type)
   • Salary (Decimal)

7. Student Class:

8. Inherits from the Person class.
9. Attributes:
   • Grade (int)
   • GradeLetter (char)

To create the equivalent classes in Python, you can use the following example code:

from abc import ABC, abstractmethod
from decimal import Decimal

class Person(ABC):
    def __init__(self, Id, name, age):
        self.Id = Id
        self.name = name
        self.age = age

class Employee(Person):
    def __init__(self, Id, name, age, Department, Salary):
        super().__init__(Id, name, age)
        self.Department = Department
        self.Salary = Salary

class Student(Person):
    def __init__(self, Id, name, age, Grade, GradeLetter):
        super().__init__(Id, name, age)
        self.Grade = Grade
        self.GradeLetter = GradeLetter

This Python code creates equivalent classes representing the class hierarchy shown in the diagram.