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Q: hello I was wondering if I could get some help creating a UML class diagram from a ERD
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A:
Q: Java. Create an abstract class to represent Employees according to the UML Diagram.
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- Assuming that you are developing software using OOP paradigm, specify the classes that are needed for the following systems: • Library Management System • Airline Management System • Hotel Reservation System For each system, you must identify at least 4 classes, and for each class, you must list data members and operations. Use the class diagram like the one below: Class Name Data members: Operations: Note: you need to have at least four class diagrams for each system. (Total of at least 12)UML class diagramA hotel chain wants to model their hotels as a class diagram, with only certain aspects that matter, which are explained below: • A hotel has a location. It offers overnight stays and it offers meetings. • A hotel serves several guests. A guest's address is saved. • A hotel consists of several corridors and rooms. The most important characteristic of a hallway is its length, while that of a room is its square footage. • There are two specific types of rooms: rooms for overnight stays and meeting rooms for meetings. The number of beds is important for a room and the number of chairs for a meeting room. • 5 to 99 guests can meet in each meeting room. A guest attends a maximum of two conferences. A guest can occupy several rooms. A maximum of 3 people can stay in one room. • A corridor has different functionality (role).A hallway is either a passageway or an escape route. As a passage, the lamps are lit in standard mode, as an escape route, the lamps are lit in…Plotting a class diagram:• Whenever a new patient is first seen, they fill out a patient information form with name, address, phone number, and insurance carrier stored in the patient information file. Patients can only be registered with one insurance carrier, but they must register to be seen by a doctor. Each time a patient visits a doctor, a claim is sent to the carrier for payment. Information about the visit is required, such as date, purpose, and cost. Patients may submit two claims on the same day.
- A company consists of departments. Departments are located in one or more offices. Oneoffice acts as a headquarter. Each department has a manager who is recruited from the setof employees. Your task is to model the system for the company. Draw a class diagramwhich consists of all the classes in your system their attributes and operations,relationships between the classes, multiplicity specifications, and other model elementsthat you find appropriate.You are asked to do a detailed design of part of a system using class diagram, modeling interactions and behaviour for a part of a library system. This part can be described as a use case: checkout an library item. In this use case, a librarian use the system to check out an item for a legitimate borrower. The system need to check the borrower’s record first and then update the library data, the borrower’s record etc. Identify the classes for this use case and use UML to draw the classes with appropriate associations. You also need to identify necessary attributes and operations for each of the classes. Draw a detailed sequence diagram for this use case.You are asked to do a detailed design of part of a system using class diagram, modeling interactions and behaviour for a part of a library system. This part can be described as a use case: checkout an library item. In this use case, a librarian use the system to check out an item for a legitimate borrower. The system need to check the borrower’s record first and then update the library data, the borrower’s record etc. Identify the classes for this use case and use a state diagram to describe the behavior of the system (For example, when the system is checking the record of an item, it will not accept checking out the item.).
- Task description Describe an example scenario where it is applicable to use the composite design pattern. You should not use the assembly-part stock control scenario described in lectures. You can make use of other sources for scenario ideas, but you should reference them appropriately. Your answer should include the following: a) A description of the scenario and the relevant objects in it. b) A class diagram illustrating the use of the composite design pattern. c) A description, with code snippets, of an implemented solution to the scenario without using the composite design pattern. d) A description, with code snippets, of an implemented solution to the scenario using the composite design pattern, making reference to how the implementation in c) was adapted. e) Your answers to c) and d) should include a discussion of data structures used, any association, aggregation, or composition relationships, inheritance relationships, and the use of polymorphismb. Create an UML class diagram that models the data relationships described in the following paragraph. • To be a collector you have to have one or more collections. • Each collection must have 2 or more items. • Each collection belongs to one collector. • A collection is made up of items owned. A particular item may be in more than one collection (i.e. an old Coke sign may be in both a Coke memorabilia collection and a sign collection.)In a university there are different classrooms, offices and departments. A department has a name and it contains many offices. A person working at the university has a unique ID and can be a professor or an employee. "A professor can be a full, associate or assistant professor and he/she is enrolled in one department. •Offices and classrooms have a number ID, and a classroom has a number of seats. • Every employee works in an office. 1. Draw the class diagram for the scenario above
- Task 4 Develop a class diagram for following description: Develop a class diagram for following description: The telephone agent uses an order registry and customer catalog to obtain access to an order & a customer respectively. The order registry uses an order number as a qualifier to select particular order instance. A customer catalog uses customer name and phone number as a qualifier to select particular customer. The attributes of an order are the order numbers and time when it is placed. The order consists of many items. An item has item_number, a quantity, unit price. It also has reference to catalog item which represents listing. When an order is cancelled or corrmitted, it cancels or commits each of its items first. When an order's total price method is invoked, the order calls the total price method of each of items and returns the sum.Question part 3: Draw a UML class diagram with all the classes and relationships. More info: In this last and final part of the course work you are required to change the definition of the Item_in_Stock class to make it an abstract class and change the getItemCat(), getItemName() and getItemDescription() definitions to make them abstract methods. You are then required to design and implement three classes which are derived from Item_in_Stock class to fully demonstrate the concept of inheritance and polymorphism. Implementation of HP_Laptop class in part II should have given you an idea of inheritance and polymorphism. Three sub classes, one class against each category (Computers, Laptops and Accessories), should contain appropriate constructors, instance variables, setter and getters methods and overridden methods for getItemName(), getItemDescription() and get_Item_details() method. You should be creative and come up with your own ideas of sub-classes. (please see the photo if…Activity: Interaction Models Consider the university system. Departments offer courses. Professors teach courses. Students can declare majors and are admitted to university departments if they meet minimum requirements. Students and professors have schedules based on courses they take/teach. Courses have rosters, scheduled times, and instructors. Courses may get full. Students can request to sign up for courses, and if the course is not full and they meet pre-requisites, the course is added to their schedule and the course will have them as a student in that course. Students can also drop courses. Students should be informed of the consequences such as change of status from full-time to part-time, loss of scholarships, and delays in graduation. Perform the following: 1. Create a use-case diagram for this university. Make your use-case diagram as complete as you can. 2. Pick two use cases from your use case diagram, CourseAdd and CourseDrop, and describe these use cases in the standard…