Computer Science CS50 Lecture Notes - Lecture 1: Use Case, Web Service

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zoejames

5 Oct 2021

School

Harvard University

Department

Computer Science

Course

Computer Science CS50

Professor

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Document Summary

Study the case study of carmatch sharer from the schaum"outline book and identify the use cases, actors and their associations between them. This use case is for processing of payment, when a new user gets the facility of car sharing then he/she has to pay some registration charges. Actor is any entity that interact with the system or play any role in the system and the system should respond to actor. In the car match case study the roles interacting with the system are: clerk. Receptionist: supervisor, franchise, web server, accountant, insurance company system, insurance administrator, insurance clerk, credit card company, credit card system, automated bank transfer system. Steps followed in car match use case : administrator adds a new car sharer account, system asks for necessary information, administrator provides all the required information and selects to complete the operation. There is a problem in the data provided; some data needs to be corrected.

Related Questions

Question 8. [6 MARKS] Consider this code: def sort_guesses (guess_list, answer): (list of float, float) -> dict of (str: list of float) Return a new dictionary where each item in guess_list appears as an item in one of the dictionary's values lists: - each item less than answer is in a list associated with key 'low', - each item equal to answer is in a list associated with key 'correct', and - each item greater than answer is in a list associated with key 'high'. If there are no items associated with one of 'low', 'correct', or 'high', then that string should not appear as a key in the new dictionary. In the table below, we have outlined two test cases for sort_guesses. Add six more test cases chosen to test the function thoroughly. R eturn Value Test Case Description no guesses one low guess guess_list answer [ 5.5 [4.7] 6.0 {'low': [4.7]}

35. Recall that a domain name, e.g. www.eecs.yorku.ca, is used to identify computers on the Internet. The main responsibility of a Domain Name Server (DNS) is to a) Keep track of registered domain names and their associated IP addresses. X b) Administer the assignment of IP addresses over the internet. c) Administer assignment of domain names on the Internet. d) Promote open development of the Internet for global benefit. e) None of the above

How To Check The Quality Of A Printed T-Shirt

Meta Description: The quality of a printed t-shirt is considered genuine when the best fabric is used and also depends on the printing method.

We all have favorite clothes and accessories such as Chicago cubs hats. There is sometimes one t-shirt we love the most and sometimes there are multiple t-shirts. The point is we want these t-shirts to last forever with us so that we can wear them as much as we want and as long as we want. But it always comes down to the quality due to which we have to say goodbye to our favorites.

So here are some of the tips you should always consider while purchasing Chicago Cubs shirts or any other printed t-shirts.

You should always check what kind of fabric is used and how long does this fabric last.
How easily the print on the t-shirt will stay or can be easily removed with wash off. You must always check the durability of the print.
Many people make mistakes related to the color vibrance while purchasing it and should always avoid accidents in mistaking saturation.
Always consider looking for the t-shirt that will deliver the best sharpness of the image and the resolution.
Do not forget to look at the detailing of the shirts and their finishing.
You should be able to breathe comfortably in it.
The common performance of the fabrics, techniques of printing, how to make the best use so that you can get the best results.

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Computer Science CS50 Lecture Notes - Lecture 1: Use Case, Web Service

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