Consider the following scenario: A mechanic does car service. During that service, it may be necessary to change the break unit. What is the relationship between the use cases "Car Service" and "Change Break Unit"? a) Car service extends Change Break Unit b) Change Break Unit extends Car Service c) Car Service includes Change Break Unit d) Change Break Unit includes Car Service
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Consider the following scenario:
A
What is the relationship between the use cases "Car Service" and "Change Break Unit"?
a) Car service extends Change Break Unit
b) Change Break Unit extends Car Service
c) Car Service includes Change Break Unit
d) Change Break Unit includes Car Service
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- (a) How should the description in Problem 5.30 (a) be written to have the same behavior when the assignments are made with=instead of with <= ?2. (b) How should the description in Problem 5.30 (b) be written to have the same behavior if A, B, C, D, and E are variables and the assignments are made with=instead of <= ?Every patient has a primary physician. Every doctor has at least one patient. Each pharmacy sells several drugs and has a price for each. A drug could be sold at several pharmacies, and the price could vary from one pharmacy to another. Doctors prescribe drugs for patients. A doctor could prescribe one or more drugs for several patients, and a patient could obtain prescriptions from several doctors. Each prescription has a date and a quantity associated with it. You can assume that, if a doctor prescribes the same drug for the same patient more than once, only the last such prescription needs to be stored. Pharmaceutical companies have long-term contracts with pharmacies. A pharmaceutical company can contract with several pharmacies, and a pharmacy can contract with several pharmaceutical companies. For each contract, you have to store a start date, an end date, and the text of the contract. Pharmacies appoint a supervisor for each contract. There must always be a supervisor for each…Answer the following questions about the given statement:∀c : Courses • ∃co : Customer • (co,c) ∈Books•What does this statement mean?•Is this statement a set or a predicate?•What does the statement evaluate to based on the current system state? Examples for reference:•∃g : Owner • g.name = gymowner ∧g.email = test-There exists an owner with the name gymowner and email test-predicate-false•{c : Course |∃co : Customer • (co,c) ∈Books}-Set of all Courses which are booked by a customer-set-{Boxing,WeightLifting,Yoga1,Wrestling}•{t : Trainer |#{c : Course |(t,c) ∈Teaches}>1}-Set of all Trainers who teach more than 1 class.-set-{Trainer 2}
- Draw Use Case Diagram for following scenario:Consider the definition of the class product Type as given in Exercise 8. Answer the following questions. (1, 2, 3, 5, 7) a. Write the definition of the function set so that instance variables are set according to the paramaters. Instance variables quantitieslnStock, price, and discount must be nonnegative. b. Write the definition of the function print to output the values of the instance variables. c Write the definition of the function setQuantitiesInStock to set the value of the instance variable quantitiesInStock according to the parameter. d. Write the definition of the function updateQuantitiesInStock to update the value of instance variable quantitiesInStock by adding the value of the parameter. e. Write the definition of the function getQuantitiesInStock to return the value of instance variable quantitiesInStock. f. Write the definition of the function setPrice to set the value of the instance variable price according to the parameter. g. Write the definition of the function getPrice to return the value of the instance variable price. h. Write the definition of the function setDiscount to set the value of the instance variable discount according to the parameter. i. Write the definition of the function getDiscount to return the value of the instance variable discount.Consider the case of a shop that sells CDs in cash. The CDs are of three types: Movie CDs, Software CDs and Music CDs. For each of the following CD types, the required attributes are:Movie CD: Movie Title, Year of Release, Lead Actor Name, CD price and CD quantitySoftware CD: Software Name, Edition, Year of Release, CD price and CD quantityMusic CD: Album Title, Year of Release, Number of Songs, Format, CD price and CD quantity. The variable of CDType can hold a fixed set of values that are Movie, Software and Music, what data type you recommend is suitable to store this information to ensure typesafety firmly. Declare and initialize the CDType variable.
- For the following, compute the weakest precondition for the following assignment statement given the postcondition. y = 2y – 1 { y > 1}Two ways to get a "self" in an object are: a) (1) to use the closure + box with dummy value changed to the object trick, or (2) to pass in self as an implicit parameter, by passing a function that returns the object when given a 'self message b) (1) to add an else clause to dynamic dispatch or (2) to pass in self as an explicit parameter, using something like msg/self c) (1) to use the closure + box with dummy value changed to the object trick, or (2) to add an else clause to dynamic dispatch d) (1) to use the closure + box with dummy value changed to the object trick, or (2) to pass in self as an explicit parameter, using something like msg/selfConsider the following scenario: A teacher interviews a student, and during the interview the teacher always grades the student. This scenario can be modeled with two use cases -- "Conduct Interview" and "Grade Student". What is the relationship between these two use cases? a) Conduct Interview extends Grade Student b) Grade Student extends Conduct Interview c) Conduct Interview includes Grade Student d) Grade Student includes Conduct Interview
- Implement a function or class to solve the Black-Scholed Model Partial Differential Equation. It should be able to price both European and American-style derivatives of arbitrary payoff structure (i.e. the payoff function should be a Callable). Implement full functionality: That is, calculate the price of both European and American options on dividend-paying stocks and be flexible to price other options besides standard calls and puts. Provide documentation: Provide docstrings and example usage for your implementation. It should be easy for someone looking at your code to understand how to call it and what the parameters mean. A short README.md file or example script would be useful.If all parameters need to be optimized, which of the models can use Goal Seek to optimize? a. y=A?x^B b. y=A?x+B c. y=A?x d. y=B?x+AAnswer the following questions about the given statement:{c : Course |∃co : Customer • (co,c) ∈Books ∧co.classcredit >2}•What does this statement mean?•Is this statement a set or a predicate?•What does the statement evaluate to based on the current system state? Examples for reference:•∃g : Owner • g.name = gymowner ∧g.email = test-There exists an owner with the name gymowner and email test-predicate-false•{c : Course |∃co : Customer • (co,c) ∈Books}-Set of all Courses which are booked by a customer-set-{Boxing,WeightLifting,Yoga1,Wrestling}•{t : Trainer |#{c : Course |(t,c) ∈Teaches}>1}-Set of all Trainers who teach more than 1 class.-set-{Trainer 2}