Translate the following Business Rules into an ERD Each Volunteer can volunteer in several areas C Each Volunteer can record multiple hours of work O Each Area has one location O Each Volunteer can display/own multiple exhibits Each Exhibit can only be in one area O O Each Volunteer can have one hotel room O o Each Hotel has multiple rooms Use the ERD to create Entities and Attributes Create a Relational Diagram between all Entities (Include Primary & Foreign Keys)
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- When using the arc implementation to convert a super set entity into a relation, what if the entitydoes not have a UID?A) create an artificial UID for the super entityB) create an artificial UID for the super entity and each sub type entityC) use another attribute of the super type entity as UIDD) ask the designer to provide a UIDCreate a database Entity and Relationship Diagram (ERD) for the following applicationThe Application idea: It is a mobile application called (Khair) to help people. This assistance is moral, material. This assistance is also provided by good people in our community. Example to understand the Application idea more: For example, a person urgently needs a medical chair or bed and does not have the ability to purchase what he needs. The medical chair or bed is requested through the application, and whoever has what he requests initiates the request through the application’s messages and determines the meeting place. Application models (page): Login included: login registration login included: user name password New registration included: name E-mail Password phone number date National Identification Number Home page included: Request - applicant name - address - send message Messages list form included: list of users Messager Personal information form: It contains a list of the user's…TRUE or FALSE - Generalization (is-a) is the relationship established between entities to show that sub-entities that are derived from the generalized entity. Select one: a. TRUE b.FALSE
- Which statement is associated with two seperate entities. a) Attribute b) Entity Type c) Reflective Relationship d) RelationshipTRUE or FALSE - A super-entity can only have two sub-entities and no more. Select one: a.FALSE b.TRUESwing Jazz Club ERD Problem Follow the Simple Procedure for ERD diagramming to design an ERD using the following user provided information. Remember the ERD will eventually turn into the design for a database from a top down view. Make sure you resolve any many to many conflicts. Label an identifier or primary key and all pertinent attributes given. If an attribute is not readily apparent from the user information, then make one up that makes sense for the particular entity. Therefore, all entities should end up with at least an identifier and another attribute that makes sense. You may use any of the approaches shown by the book, though the ER-Model and Crow’s foot are the most common. Make sure you show entities, relationships, cardinality, and optionality. Swing Jazz Club The Swing Jazz Club teaches swing and jazz dancing and offers both private and group lessons. Swing Jazz charges $60 dollars per hour for a private lesson and $10 dollars per hour for a group lesson.…
- It is the relation among individual entities and values. O principles patterns state relationCreate a database Entity and Relationship Diagram (ERD) for the following application (Submitted An image of the Diagram By using Any Application:The Application idea: It is a mobile application called (Khair) to help people. This assistance is moral, material. This assistance is also provided by good people in our community. Example to understand the Application idea more: For example, a person urgently needs a medical chair or bed and does not have the ability to purchase what he needs. The medical chair or bed is requested through the application, and whoever has what he requests initiates the request through the application’s messages and determines the meeting place. Application models (page): Login included: login registration login included: user name password New registration included: name E-mail Password phone number date National Identification Number Home page included: Request - applicant name - address - send message Messages list form included: list of users Messager…Reference: A --> B--> C QUestion? what is the defintion of this type of relationship and what is an example of it?
- 1. Create an entity named Doctor and Patient and create a one-to-many mapping using JPA. Doctor_id Patient_id Qualifica Contact_ Salary Age no tion n Doctor treats Patient Name P_Name Address Write a main program to assign values to the Doctor and Patient entity using entity manager instance.ERD and Keys A hotel has many rooms. A guest can make a reservation for one room or multiple rooms. A reservation is associated with only one guest. Draw an ERD with the relationships and resolve any many to many relationships. Create an ID for each entity you create (for example RoomID, GuestID, Reservation ID) as the Primary Key. Identify any foreign keys in each entity where appropriate.Subject - Fundamentals to Database Question 4 An entity-relationship diagram (ERD) is a specialized graphic that illustrates the relationships between entities in a database. ERD often use symbols to represent three different types of information. Draw the ERD for the following scenario: (a) Each lecturer is identified by a uniqie number, name and phone. A lecturer teaches several courses and for each course there us a unique code and title. There might be several be several lecturers in a course. (b) A university where a student may take many courses employs lecturer. Each lecturer teach one or more course but no course is taught by more than one lecturer. Each student has to complete two or three assignments for each course. (c) A car rent company wishes to create a database about its activities. The company has a number of vehicles. Each vehicle is of certain model. A customer can rent only one vehicle at a time. Every vehicle must be checked by an employee to make sure it is in…