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ERD An Entity Relationship Diagram A type of flowchart that illustrates how “entities” such as people, objects or concepts relate to each other within a system. For instance, if there are writer, novel, consumer, they can be dipicted as below. Entity A definable thing—such as a person, object, concept or event—that can have data stored about it. Think of entities as nouns. Examples: a customer, ..

super() : It allows you to use it in the superclass without repeating code. class Rectangle: def __init__(self, length, width, **kwargs): self.length = length self.width = width super().__init__(**kwargs) def area(self): return self.length * self.width def perimeter(self): return 2 * self.length + 2 * self.width # Here we declare that the Square class inherits from # the Rectangle class class Sq..