Draw an ER diagram for the following car sharing system: In the car sharing system, a CarMatch application has record of anyone who would like to share his/her car, known as a CarSharer. An Administrator registers all the potential CarSharers and with their first name, last name, home address, and date of birth. Each CarSharer is also assigned a unique id. A CarSharer can take policies issued by the Insurance Company. Each policy has a number, premium, and a start date. A CarSharer
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- Course: Database Systems: Design and Application Web Shop scenario: A supplier (Supp-#) processes many purchase orders (PO-#) and sells a number of products (Prod-#). A product is sold by only one supplier. Each of the purchase orders that a supplier may process includes several products. The relationship between order and product is defined as "Line Item". A customer (Cust-#) may place one or more purchase orders. A purchase order may be placed by only one customer. Assignment requirements: Answer the following questions using above scenario: Identify the entities and attributes that required to draw the ER diagram. Integrate the entities with appropriate relationship and design the unified ER model.Course Title: Object Oriented Analysis and Design Question : There is a utility company which provides waste management services to citizens. It has a CRM system, billing system, messaging system and mapping (GIS) system. When a customer is created in the CRM system, the billing, messaging, and GIS systems need a copy of customer data to perform follow-up tasks and automation. For instance—the billing system will create a billing account for the customer, the messaging system will send a welcome message with customer account details on preferred communication channel and the GIS system will update the customer’s address in the database for mapping purposes. After completion of one billing cycle the billing dept. sends a copy of the bill in a pdf format on the customer email address and the bill amount is directly debited from the customer’s bank account. Draw an appropriate Activity diagram . (Note): Forks and joins have the same notation: either a horizontal or vertical bar (the…Create a UML sequence diagram that will show your clients how the system’s classes will interact when customers are buying their flight tickets on the booking website. The system should allow the customer to search available flights from the database by inputting their desired location and departure/arrival date. The website will search the database and return the available flights to display. Once the customer has chosen the flight, they will add the flight to their cart and checkout. They will also then input their payment information and once everything is complete, the website should confirm the flight, empty cart and lastly display a confirmation of the ticket for the flight..
- Design a class diagram for the following project description online retailer system The system will deal with a number of domain entities – including items, orders, and customers. The items that we sell fall into user-defined categories. Some categories, such as liquor, are flagged as being restricted – customers under the age of 18 are not allowed to buy restricted items, and the system should raise an exception if they attempt to. In addition, we have to maintain certain details on all items – such as the item name, description, price, and category The system also need to maintain customer information – including names, email addresses, and age. Each customer has to have an address, to be used for billing and delivery. Customers can change their details whenever they want When a customer places an order, the system will calculate a delivery fee by using delivery priority and distance from warehouse. Orders of more than $100 qualify for free delivery, at normal priority. Overnight…Point of sales systemcreate a POS in java that will have the basic operation of a point of sales System.your system should provide the following:1. a login frame to allow the employee to login2. cash register sales3. items scanning when a client bring the product4. real time stock level5. stock infosl (product codes ,and informartion such as price and quantity)6. sales reportall the product must be stored in a SQL database using necessary security.Note:1. Use GUI to make the application2. Do not use any builder to drag and drop componentActivity: 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…
- Job Placement Management Information System The Job Placement Management Information System is developed to assist the placement and training cell of Dhofar University. The main purpose of this project is to store the students details and to find all the eligible candidate from Diploma, Graduate and Master degree, satisfying the specified criteria. The login form in the system checks for the validity of the user name and password. The main objects of DASHBORD in this project are student, check and report. In the STUDENT object, all the academic and personal details of the students are maintained separately. Provision for inserting, updating and deleting the records are made here.In the CHECKING object, checking is done separately for Diploma, Graduate and Master degree students. In the checking module, the eligible candidates who can appear for the placement can be searched. This selection procedure is based on certain criteria, given by the company, like percentage of mark, the…Operating System Structures: Select all of the following statements that are true. Ring 0 of the onion model of the layered approach to operating system structuring is the innermost ring and corresponds to kernel mode. An operating system's user mode (a privilege level) offers access to privileged commands, which are reserved for the kernel components of the operating system. The traditional UNIX kernel is an example of a microkernel.A travel authorisation form is used in most companies to approve travel expenses for employees. Typically, an employee fills out a blank form and sends it to his or her manager for a signature. If the amount is (< R500), then the manager signs the form and routes it to accounts payable to be input into the accounting system. The system generates a check that is sent to the employee for the right amount, and after the check is cashed, the form is filed away with the cancelled check. If the check is not cashed within 90 days, the travel form expires. When the amount of the travel voucher is (> R500), then the manager signs the form and sends it to the chief financial officer, along with a paragraph explaining the purpose of the travel; the chief financial officer signs the form and passes it along to accounts payable. Of course, both the manager and the chief financial officer can reject the travel authorization form if they do not feel that the expenses are reasonable. In this…
- Software development C#The application developed in Part 1 is already useful in terms of functionality, but it has a severe usability flaw: the data is not persisted, forcing the user to capture all the data from scratch if the application is executed again.For this part, you will continue working on the application you developed in Part 1. Remember to implement any feedback provided by your lecturer on Part 1 before working on Part 2. Marks will be awarded for this (see the rubric for details).All the requirements from Part 1 must still be met by the program, with the following changes and additions:1. The software shall persist the data in a SQL database.2. The user shall be able to register with a username and password.3. The software shall store only the hash of the password in the database.4. The user shall be able to log into the software with their username and password.5. The user shall only be able to see their own data and never that of other users.Non‐functional…Computational thinking for a software developer/computer programmer is a critical skill that is consistently applied. This lab requires you to develop a solution using Java object-oriented programming that simulates creating and managing a collection of songs. The system manages information about a collection of songs. The system stores the following information (for each attribute, choose any type that you think is appropriate--you must be able to justify the decisions you make): Collection Name: the name for the collections of songs Collection list of songs: the system allows you to create a collection with unlimited songs. You can add the same song multiple times to any given collection. Hence, the collection allows songs to be duplicated Note: other system functionalities can be inferred from the given JUnit test. o NoSystem.out.printlnstatementsshouldappearinit.o NoScanneroperations(e.g.,input.nextInt())shouldappearinit. Instead, declare the method's input parameters as indicated…Employee Management system: This system allows the employees to apply for leaves, upload certificates etc. online. The HR Manager can also use the system for administrative purpose. Create your own case study (problem statement) for the above application and Class diagram with at least 4 classes and explain all the relationships