Draw ER diagram for a university library information system which stores information about books, journals, publishers, students, staff, borrowing of books, and reservation of books. Note that the library may have more than one copy for some of the books.
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Draw ER diagram for a university library
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- DFD Case Study The keepers in an animal park look after the feeding of the animals. Each animal is located in a different area of the park. Each area has its own keeper who reports to the head keeper. The head-keeper maintains a record of the sorts of food that each animal species or type in the park should be fed, and in what quantities. There is no distinction made between different animals of the same species. The keepers access the information so they know what to feed each animal type. Each animal type may be given more than one type of food, and each type of food may be fed to a number of animal types. Each day the keepers will take out the food needed for the animals in their care and record this on the information system. These food types can be perishable or non-perishable according to their shelf life. For example, fresh fruit and vegetables would be perishable where tinned produce or cereals would be considered to be non-perishable. The office staff keeps a track of the food…DATABASE MANAGEMENT Design an EER diagram for a database used to manage a racket sport association (for example, US Tennis Association). The following is a list of simplified requirements. Each member of the sport association has an id, a name, sex, age, an address, a phone number. A member can be a player, an umpire (i.e., referee), a coach, or an officer (i.e. a member can belong to one or more of the above categories). An umpire has a type (i.e., national, international, etc.). A coach has a certificate (i.e., level I, II, etc.). An officer has an office (i.e., a room number such as 101 or 212 in the main building). Each club has a name, an address, an owner, and a phone number. Except for some officers, every member belongs to one or more clubs (Hint: Make relationships between the subclasses of “member” and club). A player can be a professional or an amateur (but not both). A professional player has a rank (such as 1, 2, etc. within the association), and a coach (Note: Every…Computer Science Erd (Entity relation diagram) Make an ER diagram about an online scheduling program of appointments between doctors and patients - patients - doctors - appointments between doctors and patients - payments -reports files that users(doctors or patients) make it. and can be accessed by the admin
- Data flow diagram The book ordering sub-system can help libraries require new books. It includes the following functionalities: (1) The book suppliers provide list of new books to the system. (2) The system receives the list of requested books from book ordering staffs. (3) The system records the lists of new books and requested books. (4) The system returns the information of book ordering to the book suppliers. (5) The system returns the information of unavailable books to book ordering staffs. (6) The system automatically checks the duplicated books in the library, and return the feedbacks to book ordering staffs. Please create the DFD for this sub-system.Create a UML Activity Diagram for processing an order. Once an order has been finalized, four parties are involved in processing it: Online Sales, Accounting, Shipping, and Printing. Online Sales receive the order and sends the order to Printing, where the associated PDF file is inspected. If the file is not suitable, a new file is requested from the customer, and the received new file goes for the inspection. Once the file is suitable, Accounting is informed to charge the credit card. While this is done, Printing carries out the actual printing, and sends the result to Shipping. When Shipping has both received the printed products and confirmation from Accounting that payment was successful, the products are shipped to the customer. answer step by step and take screen shoot for your answerDraw a complete ER-diagram for the following case. A lecturer (having an ID, name and room number) is responsible for organizing a number of course modules. Each module has a unique code and also a name and each module can involve a number of lectures who deliver part of it. A module is composed of a series of lectures and sometimes lectures a on a given topic can be part of more than one module. A lecture has a time room and date and is delivered by a lecturer and a lecturer may deliver more than one lecture. Students, identified by number and name, can attend lectures and a student must be registered for a number of modules. We also store the date on which the student first registered for that module. Finally, a lecturer acts as a tutor for a number of students and each student has only one tutor. Also show relational database schema including Primary and Foreign key constraints. (Please draw this on a paper)
- Each department runs a number of courses. The university provides a set of modules used in different courses. Each course uses a number of modules but not every module is used. A course is assigned a unique course code and a module is identified by a unique module code. A module can be used in one course only, but can be studied by many students. In addition to the module code each module unique title, start date, end date, texts (books), and assessment scheme (i.e., coursework and exam marks percentages) are also stored. Each course is managed by a member of academic staff, and each module is coordinated by a member of academic staff also. The database should also store each course unique title, and duration (in years). A student can enroll in one course at a time. Once enrolled a student is assigned a unique matriculation number. To complete a course, each student must undertake and pass all the required modules in his/her course. This requires that the database store the…Business System ERD Create an ERD based on the Crow’s Foot model, using the following requirements: An INVOICE is written by a SALESREP. Each sales representative can write many invoices, but each invoice is written by a single sales representative. The INVOICE is written for a single CUSTOMER. However, each customer can have many invoices. An INVOICE can include many detail lines (INVOICE_ITEM), each of which describes one product bought by the customer. The product information is stored in a PRODUCT entity. The product’s vendor information is found in a VENDOR entity. You do NOT need to put any fields/attributes into this ERD. Just draw the entities as empty boxes with relationships between them.A cormpany has a single table in a computer (e.g., a spreadsheet) in which is stored every information abow each worker including the transactions he/she does in the company. This,table is A A table database B A spreadsheet CA flat file database •D A joint database
- explain how to create UML class diagram for this task. show all the steps. thanksCase Study 2:A commercial bakery makes many different products. These products include breads, desserts,specialty cakes, and many other baked goods. Ingredients such as flour, spices, and milk arepurchased from vendors. Sometimes an ingredient is purchased from a single vendor, and othertimes an ingredient is purchased from many vendors. The bakery has commercial customers,such as schools and restaurants, that regularly place orders for baked goods. Each baked goodhas a specialist that oversees the setup of the bakery operation and inspects the finished product.Exercise:1. Draw an entity-relationship diagram for the above situation.2. List the tables and keys that are needed to implement the commercial bakery system.need diagram only Draw an ER diagram for the following scenario: A designer has a store of designer dresses both for male and female. People can buy as well as take dresses on rent from the store. Each dress in the designer's store, is identified by unique ID. A dress in the store can be categorized into various categories Western, Indian, Indo-westem, etc. The designer maintains the name, phone number of people who have taken dresses on rent. The designer also maintains the name, phone number, and address of people who have bought dresses from the store. The designer also collects feedback from the people who have bought or taken dresses on rent from the store. Design the ER diagram by mentioning all the structural constraints. You may also include additional information in addition to the requirements listed.