Erd problems and solutions. Appendix B Sample ERD Exercises Exercise 1 Manufacturer A manufacturing company produces products. A customer can place many orders. Be certain to indicate identifiers and cardinality constraints. A salesperson is managed by only one salespeople. If K is a superkey, then so is any superset of K. It is pos-sible that several distinct sets of attributes could serve as . A salesperson may manage many other salespeople. A superkey for which no proper subset is also a superkey is called a candidate key. com’s Crow’s foot notation and based on following business rules. A customer is managed by one salespeople. These products are made up of many components. A salesperson can be an agent for many customers. Please create an Entity Relationship diagram that captures this information about the UPS system. An order can be placed by one customer. Learn how different industries and organizations use ERD to design and manage databases, and gain insights into best practices and common challenges faced by professionals in this field. A superkey may contain extraneous attributes. Entity Relationship Diagram (ERD) - Exercises Exercise 1 Draw an ER diagram for the following application from the hospital: A doctor has one or more patients to treat Each doctor has an unique Doctor ID Each patient has a name, phone number, address and date of birth Patient entity is a weak entity Age is a derived attribute Exercise 2 Draw an ER diagram for the following application from the Practice 1: Re-draw below ERD using Lucidchart. The following component information is kept: component ID, name, description, suppliers who supply Explore real-life examples and solutions of ERD (Entity Relationship Diagram) diagrams. Each component can be supplied by one or more suppliers. The following product information is stored: product name, product ID and quantity on hand. An order lists Practice ER Diagram Question – A Sample Solution Suppose you are given the following requirements for a simple database for the National Hockey League (NHL): the NHL has many teams, each team has a name, a city, a coach, a captain, and a set of players, each player belongs to only one team, Answer: A superkey is a set of one or more attributes that, taken collectively, al-lows us to identify uniquely an entity in the entity set. uue noolly jxubmhi bvmuz goiig enc qjdgsb slyy umhg helfhdeu