Final computer scince Azi WTAMU

The Unified Modeling Language

• describes the classes and objects of an application

• can be used to write the pseudo code for a class

• can be used to write the code that defines a class

• is a scripting language for working with objects

A UML class diagram

• describes the functions of one or more modules

• shows the state of one of more classes

• describes the attributes and methods of one or more classes

• shows the relationship between the identity of an object and its state

Given a variable named p that refers to a Product object, which of the following statements accesses the price attribute of the Product object?

• Product.price

• p.price

• Product.price()

• p.price()

After you identify the data attributes for an object, you can identify the methods that

• store the data for the object

• define the behavior of an object

• access the object

• can be deleted

If a data attribute contains two or more components, you should consider

• combining it with other attributes

• removing it from your list of attributes

• subdividing it into multiple attributes

• storing it in a separate class

In a three-tier architecture, the business tier stores the code that

• controls the user interface

• defines the business objects

• accesses the file or database

• handles all monetary transactions

Refer to Code Example 18-1: Which code snippet adds the frame to the root window?

• root = tk.Tk() root.title("Escape from the Maze") root.geometry("600x300")

• frame = ttk.Frame(root, padding="200 100 200 100") frame.pack(fill=tk.BOTH, expand=True)

• import tkinter as tk from tkinter import ttk

• root.mainloop()

To lay out components in a series of rows and columns, you can use the __________ method

• grid()

• pack()

• table()

• layout()

A component that only displays text is known as a

• Button

• Label

• Frame

• title

Most tkinter components, like frames and buttons, have a constructor that accepts __________ as its first argument.

• the parent component

• the child component

• the root window

• a frame