Use Case

Use Case: “Search for the books”

Short Description: “The Students are able to borrow a book in the library”

Actor: “Students”

Requirements: “Each Student should have an ID”

Pre Condition: “Each ID of Student should already validated”

Post Condition: “The Students are able to borrow a book”

Main Flow: “Each Student put their name, signature, code of the book and the date to a specified record book”

Alternate Flow: “Your ID was not validate”

Exceptions Flow: “No network connection”

Use Case: “Search for foods”

Short Description: “The customer is able order foods in the restaurant”

Actor: “Costumer”

Requirements: “Costumer should have money”

Pre Condition: “The Costumer picking some foods”

Post Condition: “The Costumer was ordered”

Main Flow: “The Costumer should pay first in the casher”

Alternate Flow: “Your money is not enough to buy this kind of food or not enough to buy your order Sir/Mam”

Exceptions Flow: “Your money is fake!”