This question contains a brief UoD that provides contextual information regarding a system or organisation. You will need to create an Entity Relational (ER) diagram, or Extended Entity Relational (EER) diagram based on the UoD. If the UoD is unclear regarding specific aspects of the brief you may note assumptions on your ER diagram. However, please beware that your assumptions must not conflict with or violate any aspects of the UoD. On a large online retail platform, different users can log in using their unique identifiers and shop for various items. Each of these items comes with a unique identification code, name, price, and detailed description. Users, apart from their unique identifiers, also provide their name, email, and shipping address. These users can make multiple purchases on different dates, with each transaction assigned an identification code unique to the user, along with recording the date of the transaction and the total cost. Each transaction can consist of one or more items, and the same item could be part of various transactions made by the same or different users.

Can you help me express the following situation with an ER diagram： On a large online retail platform, different users can log in using their unique identifiers and shop for various items. Each of these items comes with a unique identification code, name, price, and detailed description. Users, apart from their unique identifiers, also provide their name, email, and shipping address. These users can make multiple purchases on different dates, with each transaction assigned an identification code unique to the user, along with recording the date of the transaction and the total cost. Each transaction can consist of one or more items, and the same item could be part of various transactions made by the same or different users.

This question contains a brief UoD that provides contextual information regarding a system or organisation. You will need to create an Entity Relational (ER) diagram, or Extended Entity Relational (EER) diagram based on the UoD. If the UoD is unclear regarding specific aspects of the brief you may note assumptions on your ER diagram. However, please beware that your assumptions must not conflict with or violate any aspects of the UoD. In a busy medical facility, individuals are treated and identified by a unique code, and their names and home addresses are kept on record. There are two types of individuals, one who stays in the facility and is assigned a room number (Inpatient), and the other who visits the facility and is given a date for their next appointment (Outpatient). Additionally, the medical facility keeps medical records for all patients. Each record is associated with a unique number, the date it was created, and a diagnosis. The medical facility also maintains a detailed catalog of health professionals, each with their unique identifiers and specialty fields. These professionals are involved in the administration of various treatments, each of which is given a unique code, a name, and a detailed description. A treatment can be administered by a health professional to an individual at a given date and time.

Ramya wants to model all the items in a retail store under various categories and sub-categories. Which of the below data structures can be used to optimally represent it?

Assuming Mr. Moi only wants a database system that would keep records of medicine{names ofmedicine, amount in grams in stock}, purchase{medicine bought, amount in grams bought, whoattended to customer, when it was sold, contact and name of customer that bought the medicine}a. Draw a normalized ER diagram with only the most important data from question 1 bearing in _mind the information that Mr. Moi wants.

An online bookstore is planning to develop a comprehensive management system to streamline its operations. The system aims to handle various aspects of the business, including inventory management, customer orders, and employee roles. The primary goal is to provide customers with an efficient platform for browsing and purchasing books while allowing employees to manage orders and maintain accurate inventory records. The system should keep track of book details such as ISBN, title, author, genre, and price. Customers will have unique identifiers, and their information will include names, email addresses, and delivery addresses. Orders will be associated with customers and will include order IDs, order dates, and total order amounts. Employees will have distinct roles, and their details will encompass employee IDs, names, positions, and salaries. The relationships among these entities will define the flow of information and activities within the bookstore. Customers will be able to place multiple orders, each associated with a single customer. Orders will consist of multiple books, and each book can be part of multiple orders. Employees will process orders, and each order will be assigned to a specific employee. Additionally, employees will update inventory records for various books. The bookstore intends to use a UML class diagram to represent these entities, attributes, methods, and relationships to guide the system development process effectively. a) Draw the Class Diagram for the above scenario.