Draw an ER diagram with the following data: Entities: Student, Exam, Course ⚫ Relationships: • Student takes at least one exam o An exam is given to at least one student. 。 An exam concerns only one course o A course has a least one exam ■ Attributes: Stud_Roll No, Stud Name, Stud Age, Course_No, Course_Name, Course Hours, Exam_No, Exam date, Exam Duration, Exam_Mark.

Q: n the attached diagram, which of the following statements are true?       primary key for section…

A: Weak entities are represented with double rectangular box in the ER Diagram and the identifying…

Q: STORE Store Nor Store Name Store Address Is Managed by Mgr Role Start Time Mgr Role End Time…

A: Given a relationship between store and employee both which are classes and have some properties.Here…

Q: First normal form (1NF) requires that the domain of an attribute may contain only. A) Key values B)…

A: First Normal Form also known as (1NF) is Said to be one of the normalization rules in relational…

Q: The entity type STUDENT has the following attributes: Student Name, Address, Phone, Age, Activity,…

A: The entity type STUDENT has the following attributes: Student Name, Address, Phone, Age, Activity,…

Q: Schema: Part(PartNo, PartName, VehicleType, UnitPrice, SalesPrice) Service(ServiceNo, PartNo,…

A: CREATE OR replace FUNCTION getprofit (    p_part_number IN NUMBER) RETURN NUMBER IS    l_part_name…

Q: Computer Science After completing a course in database management, you have been hired as a summer…

A: The ER Is given below in the picture:-

Q: Q1) Draw the ER Diagram for the scenario below. The company database keeps track of company's…

A: The Entity-Relationship (ER) diagram provided above captures the essential elements of a company…

Q: Data Model Design: In this class practice, you will use the user story from class practice 01…

A: The given is a user story related to the library system. The requirement is to identify entities and…

Q: 3. Figure 2 shows an Entity-Relationship (ER) diagram for a University dining service a) Develop a…

A: MENU( Menu ID, Menu Desciption, Menu Type) EVENT( Event ID, Event Date, Event Location, Event Time)…

Q: Relational Model EMPLOYEE Fname Minit Lname Ssn Bdate Address DEPARTMENT Dnamc Dnumbor Mgr_son…

A: What Is ER Diagram:ER, suggests the relationship between one entity to every other entity, and the…

Q: Essential Oil product is marketed, testing is carried out based on the production batch from any…

A: It is defined as a collection of information that is organized so that it can be easily accessed,…

Q: A "candidate key" is: any set of fields that determines the values of all other fields functionally…

A: Let's break down the other options:"any set of fields that determines the values of all other…

Q: ERD and Keys A hotel has many rooms.  A guest can make a reservation for one room or multiple…

A: ERD is called the Entity-Relationship model. ERD diagrams are used to draw the relationships between…

Enhanced ER Model

The enhanced ER model is an abbreviation for Enhanced Entity-Relationship (EER) model. As you know, the entity-relationship (ER) model is a pictorial illustration of the relationship between various entities of a domain. In the case of a large amount of data with multiple interrelated entities, the ER diagrams become complex and tough to interpret. For such cases, the need for enhancement in the ER model was observed, and thus, the EER model was designed.