LOGICAL DATABASE DESIGN.     The above EER-Diagram represents a Health Club Membership account that has two types of memberships (see Figure 4). A member can hire trainer if they wish so. Derive relations for logical model from the above EER-Diagram. Please identify any primary key or foreign key in the derive relations (if applicable).

Q: Create an E-R model for the following scenario. Show entity names, primary keys, attributes for each…

A: We need to create ER diagram for above case studies See below step for diagram.

Q: A primary key of another entity as an attribute of an entity creates: A Parent-Child connection…

A: A primary key is unique key which can't be null. There can be only one primary key in one table.…

Q: Given the following EER diagram, write down the corresponding relations using the method taught in…

A: The answer is

Q: The crow's foot in a diagram a.) is only used to show N:M relationships. b.) shows the relationship…

A: Crow's foot Diagram contains crow foot notation in which the cardinality and modality of the…

Q: Create an E-R model for the following scenario. Show entity names, primary keys, attributes for each…

A: According to the information given:- We have to follow the mentioned scenario in order to make the…

Q: Normalise the answer from Q.5.2 to third normal form (3NF), showing all steps with explanations. The…

A: Please check the step 2 for solution

Q: 2.Given the following database in Figure 1 Employee(ssn:int,name:string.jobTitle:string)…

A: Entity Relationship Diagram (ERD) or Entity Relationship Diagram (ERD) is a diagram that shows the…

Q: Consider the following E/R diagram with isa relationships, in which every node represents an entity…

A: The given problem is related to Database modeling with IS-A relationship where IS-A relationship…

Q: How to Doing "Update-Database" within your code in Entity Framework.

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Q: Which one is correct When transform the following ER diagram into a relational schema name manager…

A: employee is the relation and the remaining will be the attributes and relationship

Q: Create an ER model related to the following entities and relationships: Department, Student,…

A: The Diagram of the ER model is attached here with the answer. Please refer to step 2.

Q: Create an entity relationship diagram and the relational diagram to show relationship between all…

A: ERD :

Q: Create a database schema for a dental clinic. The dental clinic has five relations, Patients,…

A: The database schema describes how data is arranged in a relational database, including logical…

Q: What are the relationships and their meaning in the movies E/R diagram? name hometown title year…

A: As per our guidelines we are supposed to answer only one question. Kindly repost other questions as…

Q: What are three signs that a surrogate key should be generated for the primary key of a relation…

A: A surrogate key is one that serves no practical or operational purpose. It's "artificial" and made…

Q: Please transform the following Entity-Relationship Schema (Diagram) into a Relational Schema. Please…

A: Here PNo and SSno are primary key.  The following are the entities : PROJECT, EMPLOYEE, ENGINEER The…

Q: address phone_no Place Home Telephone name albumldentifer speed Lives Ssn copyrightDate ide…

A: The sql statements for all the above 9 tables has been created succesfully please refer in step2

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A: Answer: Given  EMPLOYEE (EMP_ID, EMP_NAME, DEPT, GRADE, SALARY, AGE, ADDRESS). Functional dependency…

Q: Can you please help me in how I can turn the Entity Relationship diagram into a Logical Database…

A: An Entity-Relationship (ER) diagram is a visual representation of the entities (objects or concepts)…

Q: According to another non-key attribute, what is the connection between the primary key and a non-key…

A: The term "functional dependence" refers to the relationship between two features. A relationship,…

Q: Design ER diagram to model the online bookstore’s database, in which there are four entities, namely…

A: Design ER diagram to model the online bookstore’s database, in which there are four entities, namely…

Q: Assume you are a database developer for a company. You were asked to design a database for a…

A: If we convert the given information into Entity Relationship Diagram, the entities present in the…

Q: Please help with the database system question down below: Illustrate a instance of sales invoice and…

A: The entities present in the given diagram are: Car Salesperson Sales Invoice Customer Mechanic…

Q: Apply the ER-to-Relational Mapping Algorithm to get the relational model (database schema) from the…

A: For relationship between Dependent and employee is 1:N with the dependent being weak entity. So we…

Q: ✦ Converting schema model from ER model, an additional table is made in case of many to many…

A: ER diagram is converted into Relational model in which each entity is converted into a table and all…

Q: Translate the E-R diagram on page 1 (diagram) to database schema using MySQL Workbench (export as…

A: An Entity Relationship (ER) Diagram is a type of flowchart that illustrates how “entities” such as…

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A: The Entity-Relationship (E-R) diagram for the given relational schemas is as follows,

Q: Lab 3: Normalization Assignment: Problem #11 from Chapter #6. (Be sure to note that this is PROBLEM…

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A: Database Design:- As the user’s requirements change,so developers need to change DBMS from time to…

Q: ER model relationships are represented using a.) relationship keys b.) primary keys c.) crows…

A: To find the solution for: ER model relationships are represented using  What do the cardinalities…

Q: Consider a relation X with six attributes WYSMFE where WS is a composite primary key for X. Assume X…

A: The handwritten solution is provided below:-

Q: Consider the following relation that involves student data: RADE (ClassName, Section, Term, Grade,…

A: Primary key for the given relation is (ClassName, Section, Term, StudentID)  Here the functional…

Q: Explain how functional dependencies can be used to indicate the following:• A one-to-one…

A: The functional dependency is a relationship that exists between two attributes. It typically exists…

Q: Design a conceptual schema (ER diagram) for doctors’ offices. The following information describes…

A: Required E-R diagram is mentioned below :

Q: hat's the difference between SSL and TLS? Exists a distinction between these terms?

A: SSL:  Included in the Secure Sockets Layer security technology are the domain name and browser. A…

Q: Describe how functional dependencies may be used to denote the following: • The entity sets student…

A: Functional dependency is a relationship that exists between two attributes. It typically exists…

Q: OGICAL DATABASE DESIGN The above EER-Diagram represents a University Library Membership (see…

A: The given problem is related to database modeling where the Enhanced Entity Relationship model is…

Q: Give an SQL schema definition for the employee database of Figure 3.19.Choose an appropriate domain…

A: Given: Give an SQL schema definition for the employee database of Figure 3.19.Choose an appropriate…

Q: Discuss how traceability relations are classified, elicit a brief example that defines the…

A: The Traceability Matrix is a document that co-relates any two basic documents that require a…

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.