In an entity-relationship diagram, what does cardinality represent? 1:The distinct identifier for which data is kept 2:The relationship's maximum number of entity instances 3:An entity's total amount of primary keys. 4:An entity's total amount of characteristics

Q: Draw an Entity Relationship Diagram (ERD) using Unified Modelling Language (UML) notation  according…

A: I will explain it in details,

Q: Unified Modelling Language (UML) is often used as a notation when drawing Entity-Relationship…

A: Unary Relationship When there is a relationship between two entities of the same type, it is known…

Q: Draw an ERD (Entity relationship diagram) for the supermarket Make sure you identify all the…

A: Entity Relationship diagram contains mainly 3 components. That are entities, attributes and…

Q: Q.No.1.a. Draw ER- notation for the given elements of ER-Model. Entities Strong Entity Weak Entity…

A: Note: The solutions of the first three subparts of question 1 are shown below. Please repost the…

Q: Draw an entity-relationship (E-R) diagram torepresent common business situations.

A:

Q: Office stestbiame deptCode lastName frstName tacid rank Department employs Credits Faculty sRated…

A: a)entity type that has more than 2 relationships are- class and department class- relationship with…

Q: Entity-Relationship Diagrams (ERD) Background Information: Study the following statements to…

A: Explanation: Following are the Business Rules and ER Diagram, Business Rules: A academic consultant…

Q: Scenario – “Generate ERD of Use Case Diagram” Task to do: i. Identify Entities with atleast 10…

A: I have drawn the E-R diagram for a Student Management System. I have taken 10 attributes in each…

Q: company provides catering services for clients who need special-occasion, celebratory dinners. For…

A: Actually, given information: A company provides catering services for clients who need…

Q: You are required to draw a complete Crow's Foot ERD that includes the following entity relationship…

A:

Q: Given the conceptual model below a) Write all business rules depicted by the model.          b)…

A: a) Write all business rules depicted by the model.1. customer own many cars. 2. Some customers do…

Q: enhanced entity relationship diagram using the diagram below

A: ERD stands for Entity Relationship Diagram. These types of diagrams are also known as ER diagrams…

Q: Based on Entity Relationship Diagram (ERD) below; a) Write the correct business rules for all…

A: The given problem is related to database entity relationship diagram where the solution will include…

Q: Q.No.1Analyze the given entity relationship diagram and answer the following questions. P ld Name…

A: Given question has asked to analyze the entity relationship diagram and answer the following…

Q: ntity Relationship Diagram (ERD) using Unified Modelling Language (UML) notation according to the…

A: The erd has 3 entities and 2 associative Entity to remove the many to many relationship. The entity…

Q: What exactly are entity-relationship diagrams, and how do they come into play? What kind of symbol…

A: Any real-life item engaging in a business situation is represented by an entity, which contains a…

Q: Draw an Entity Relationship Diagram (ERD) using Unified Modelling Language (UML) notation according…

A: All entities must have surrogate primary keys. A contact person represents one or more suppliers…

Q: Part 1) Given the ER-diagrams shown below, describe (in an organized way) as much as you can about…

A: This is the ER diagram of Personal Vehicle.We have to explain each relationship and each constraints…

Q: phone EMP-DEP SUPP- SUPPLIER EROJ-PART composing DEPENDANT COMPONENT PART compobed-of type…

A: Q1. Entity which are represented by solid rectangle boxes are strong entity. Strong entity have…

Q: Interpret the different form of Entity used in the given scenario of ER diagram. Illustrate the…

A: Strong entity Account Region Item creep Weak Entity Character Item Instantiation creep…

Q: Establish the objective of an entity-relationship model and explain how it is constructed

A: Introduction: ER models explain how objects in a particular field of knowledge are interconnected.…

Q: Describe the objective of an entity-relationship model.

A: Entity Relationship Diagram: The ERD (or Entity Relationship Diagram) is a tool for discussion,…

Q: Given the ER diagram above, answer the following questions: Name an entity type that has more than…

A: a)Department is an example of entity having more than one relation. b)Departmentname is a key…

Q: The cardinality ratio depends on the real-world meaning of the entity types involved and is defined…

A: 1. Each student can have only one social security number and a social security number can belong to…

Q: Q1/ Draw ER diagram representing entity sets and relationship set described below, also determine…

A: Given entity set: Entity name: Employee Attributes: ID, name, title, salary Entity name: Department…

Q: Create an Entity Relationship Diagram (ERD) using UML notation after studying the business rules…

A:

Q: b. Consider the below Enhanced Entity relationship diagram and answer the following questions. PBox…

A: Since the complexity of data is growing, using the conventional ER model for database modeling is…

Q: The below Entity Relationship Diagram (ERD) is in second normal form. Draw a new ERD in third normal…

A: New ERD in third normal form is an given below :

Q: What is the term used to describe a non-key attribute in one entity that points to the primary key…

A: This is used to establish relation between two tables

Q: A company provides catering services for clients who need special occasion celebrating dinners. For…

A: Actually, given information: A company provides catering services for clients who need special…

Q: What two conditions must be met before an entity can be classified as a weak entity?Give an example…

A: Lets see the solution.

Q: uRR-id phone SUPP. EMP-DEP SUPPLIER EROJPART composing DEPENDANT COMPONENT PART compoted-of type…

A: Given E-R diagram Strong entity is represented by single rectangle. Two strong entity’s relationship…

Q: Draw an Entity Relationship Diagram (ERD) using Unified Modelling Language (UML) notation according…

A: Draw an Entity Relationship Diagram (ERD) using Unified Modelling Language (UML) notation according…

Q: The cardinality ratio depends on the real-world meaning of the entity types involved and is defined…

A: 1. Student can only one social Security number while a social Security number can belong to only one…

Q: What is the difference between a weak entity and a strong entity that is necessary to have a…

A: This question comes from Database Management System which is a paper of Computer Engineering. Let's…

Q: give a background for the Entity Relationship theory and the Guidelines for refining an Entity…

A: The question has been answered in step2

Q: Explain what the Entity-Relationship model is and how it operates.

A: Introduction: They are also known as the ERDs or ER Models, and they use a preset collection of…

Q: relationship between entity supertype and entity subtype is known as  _______.     Partial…

A: A relationship between entity supertype and entity subtype is known as a Total participation…

Q: Use an appropriate example to explain Entity Relationship Diagram.

A: Entity Relationship Diagram Entity–relationship diagram describes a structure of the database with…

Q: Creation of Entity Relationship Diagram Draw the entity relationship diagram (ERD) for this…

A: Entity Relationship Diagram :- An Entity Relationship Diagram (ERD) is a visual representation of…

Q: Describe the purpose and operation of an entity-relationship model.

A: Models of entity relationships are based on the relationships between entities in the actual world.…

Q: 15. Below is a fragment of the entity-relationship diagram. For the relationship shown, identify its…

A: For the given entity-relationship diagram, we have to find the cardinality, relationship, and…

Q: What is the Entity-Relationship Model and what is its purpose?

A: What is the Entity-Relationship Model  what is its purpose? ER model stands for Entity Relationship…

Q: Describe data relationships, draw an entityrelationship diagram, define cardinality, and use…

A: Data relationships: A relationship is a situation between two relational database tables where one…

Q: i. Identify Entities with atleast 10 attributes per Entities. ii. Identify all relationsh

A: Given Scenario – “Generate ERD of ERD” Task to do: i. Identify Entities with at least 10 attributes…

Q: a. Identify all entities and attributes for each entity from the Sales Form in Figure 1. Provide…

A: The given problem is related to database where a form of sale is given and the requirement is to…

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.