Draw an ER diagram for the following scenarios:
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Draw an ER diagram for the following scenarios:
Library System
Stanford University is having a library. Students and Faculties are eligible to issue books. If a student registers to a course, he/she must issue a book related to that course. A student can issue a maximum of 10 books and faculty can issue a maximum of 15 books. Every book has a deadline to return the book.
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- Consider the following scenario A student has a name, which consists of a given name and a family name, and a student IID. Each student is uniquely identified by his/her student ID.A course has a subject and a course ID. For each course, we want to record the number of students taking that course and the type of equipment being used for the course. A course is uniquely identified by its course ID.A student can be enrolled in an arbitrary number of courses, and an arbitrary number of students can be enrolled in a course. For each course in which they are enrolled students receive a lab mark and an exam mark.A course cannot exist if there is no student enrolled in it.A school is distinguished by the honour's degree that it awards. We also want to record to which faculty a school belongs. A student is registered with at most one school, while a school can have an arbitrary number of students. Questions a) Draw an Entity Relationship Diagram b) translate the ERD into a relational data…1)Modeling: Make a CDM from the following scenario: * A retail company wants to manage their sales activity. We have the following information- The date of sale, with the possibility of rolling up to the week, month, quarter and year- the store where the sale was made: store name, brand, address, city, department and region. - The employee associated with each sale: surname, first name, date of birth, social security number. Each employee is associated with a store.the customer who purchased the product surname, first name, date of birth, address. The product sold product name, d - iption, category, unit price. The order: quantity sold, amount of turnover, amount of margin. A transaction can consist of one or more orders. The indicators (quantity, turnover, margin) can be negative if it is a reimbursement. 2) In your MCD above, what are the dimension tables? * 3)In your MCD above, what are the fact tables?Q: Develop a Swim-lane diagram for given scenario. The BRT service requires a system which will enable a passenger to buy ticket using an ATM like machine called as Ticket vending machine. Activity is started by Commuter / passenger who needs to buy a ticket. Ticket vending machine will request trip information from Commuter. This information will include number and type of tickets, e.g. whether it is a monthly pass, one way or round ticket, route number, destination or zone number, etc. Based on the provided trip info ticket vending machine will calculate payment due and request payment options. Those options include payment by cash, or by credit or debit card. If payment by card was selected by Commuter, another actor, Bank will participate in the activity by authorizing the payment. After payment is complete, ticket is dispensed to the Commuter. Cash payment might result in some change due, so the change is dispensed to the Commuter in this case. Ticket vending machine will show…
- Consider the following scenario and draw an E-R diagram for Cathay airlines. Cathay Airlines stores details about an airline’s fleet, flights, and seat bookings. The airline has one or more airplanes and an airplane has a model number, a unique registration number, and the capacity to take one or more passengers. An airplane flight has a unique flight number, a departure airport, a destination airport, a departure date and time, and an arrival date and time. Each flight is carried out by a single airplane. A passenger has given names, a surname, address and a unique email address. . Each address is made up of a street, a city and a postcode. A passenger can book a seat on a flight.Consider online library system where library administrator is able to see all the books transaction made by students and staff. Draw the class diagram (proper relations between different classes) and Use case diagram for the above scenario.Computer Science Use UML to model the following scenario: A water purification plant is identified by its name and alphanumeric plant ID. The name of the plant can change but its ID cannot. Each plant purifies water but has a number of purification mechanisms for doing so. Conventional Filtration, Evaporation, Flocculation and Nano Filtration are each different kinds of filtration mechanism that implement the filter behaviour differently. Each filtration mechanism has an associated cost which can be accessed but not modified.
- Create a Use Case Diagram for the below scenario: In The University of Technology Library Systems, whenever a new books arrives to the university that books information will be entered by the inventory officer into the inventory. Library staff will allow the students to borrow the books and also return the books. Students in the university can search the books and reserve that book automatically to borrow. Also there is a Library manager who will have permission to print the books titles delete the book copy information, view overdue or books which are not returned on time and also view who has reserved the books in advance Now draw the use case diagram by identifying actors, use cases etc.Question#3: Draw an activity diagram for the following scenario: In an online purchasing system, the buyer requests to buy an item. In parallel, the system looks up whether the item exists in the store and verifies if the buyer has an account with the system. If the buyer does not have an account, the system will ask for registration info from the buyer to open an account. If the buyer does not provide registration info, the system exits. If the item does not exist in the store, the system exits. If the item exists, the system will check if the item price is less than or equal to buyer’s account balance. If the buyer has enough money in the account to purchase the item, the system completes the purchase order successfully. If the buyer does not have enough money, the system exits.Assume a queue simulation system with a processing machine. The time between the arrival times and processing of raw materials for the queuing system is shown in table 1 below. Construct a simulation table, from clock simulation t = 0 to t = 20 (units = minutes). During the simulation starts at t = 0, there is an entity of the previous shift is being processed by the machine that will end the processing at time t = 4 minutes. Then find the answers to the following questions: Total idle time Average customer waiting time in the system Table 1: The time between arrival and processing times Raw Materials 1 2 3 4 5 6 Time between arrival (minit) - 2 13 2 2 3 Processing times (minit) 2 3 2 5 2 3
- uml sheet question 2: Design UML diagram for the license issuing process of vehicles. Therequirements are as follows:o The country is divided into departments (Cairo, Giza, Alex….etc.). Each department is described by a code (unique), and severalservice locations (e.g., for Cairo department, there are: Heliopolis,Nasr City etc.).o Each Vehicle is described by a number (unique: for all vehicles inthe same department), model, type (private, Limousine, taxi….etc.), color, motor capacity, number of seats, manufacturing year,license issue date, license expiry date, owner, tax rate, and a set offins. The owner, type, and tax rate information are mandatory foreach vehicle. Each vehicle type is identified by a code (unique),name (unique), and has a set of tax categories. Each tax categoryhas a specific tax rate.o Each vehicle fin is described by number (unique), type, date, andvehicleo Each fin type is associated with specific value. When a vehicle istransferred from one department to another…Question 1: Suppose you have the following scenario: The Palm Tree System is a system that offers multiple services to farmers. The farmer can search for product, buy product and reserve appointment for consultation. Also, he can add comments on the services provided for him. An expert can answer questions and post advices. Both of them need to log in to the system. By using Star UML tool, draw a Use Case diagram for the above scenario.Refer to Question 1(b) and sketch a UML sequence diagram for the scenario where the administrator registers a patient who only has public health insurance NOTE 1(B) answer is given in picture