Give two relationships between the entity types EMPLOYEE and DEPARTMENT?

Q: Can the foreign key be extracted from another table that is not connected to it in entity…

A: Foreign keys are a part of table which are being sourced from some column in a different table.

Q: n an entity-relationship diagram, what does cardinality mean? 1:The data is saved concerning a…

A: Answer:

Q: Give an example of the use of effective (or effectivity) dates as attributes of an entity.

A: Effective dates as Attributes of an Entity Effective dates: Effective dates are used to design the…

Q: . Create a data model from the below and ensure it show:    a.) Attributes    b.) Entities    c.)…

A: Summary :- We got our result.

Q: Prepare an entity relationship diagram for the revenuecycle that includes entities, cardinalities,…

A: An ER diagram using crow's foot notation has been designed to comply with the given business rules .…

Q: Describe the Entity-Relationship model and its function.

A:

Q: What is the definition of an Entity set?

A: Answer An entity set is a logical container for instances of an entity type and instances of any…

Q: How are entity-relationship diagrams used? What kind of symbol is utilized to represent a…

A: How are entity-relationship diagrams used? Ans:  Entity-Relationship Model (ER Modeling) is a…

Q: Make a list of the characteristics you'd want to see in an entity identification property.

A: Answer:

Q: What is an Entity Relationship Diagram? Can you show me an example.

A: An ER diagram shows the relationship among entity sets. An entity set is a group of similar entities…

Q: What Are the Critical Relationship Types Found in a Data Model? Describe Them.

A: To describe the critical relationship types found in a data model.

Q: If you have an entity with 100 different attributes, what would be some strategies to model this…

A: Entity relationship model: It is an ER model. It is a graphical approach for database design. It is…

Q: What does it mean to be a weak entity? Set a good example.

A: Introduction: Although an entity type should contain a key attribute that uniquely identifies each…

Q: example

A: Ternary relations:- When three entities are involved and taking part in a relationship then it is…

Q: Given the ER diagram to the right, which entity types deserve to stay entity types and which ones…

A: Given the ER diagram to the right, which entity types deserve to stay entity types and which ones…

Q: What is entity type?

A: Given: What is entity type?

Q: Consider the following entity relationship diagram. Booking Employee Building • Booking ID > •…

A: Every booking is associated with exactly one employee. Answer: True   Every employee is associated…

Q: 10. Consider the following entities: Job applicant b. Company c. Interview а. d. Job offer Design an…

A: The four entities and their attributes can be listed as follows: a. Job applicant: Name Phone…

Q: Transform the following entity relationship diagram into a relational schema. Supervisor supervises…

A: Relational schema : The schema is defined as the design of a particular system lets say for example…

Q: What is the difference between a data entity (data model) and an external entity (process model)?

A: The data model defines how the data is stored and processed in an organization. There are three type…

Q: Write down the many kinds of attributes in the Entity-Relationship (ER) model.

A: Given: 1. Make a list of the different kinds of characteristics that are used in the…

Q: In an entity-relationship diagram, what does cardinality represent? 1:The distinct identifier for…

A: The CORRECT OPTION will be OPTION(2) which is "The relationship's maximum number of entity…

Q: OE-> E QUESTION 8 What is the type of relationship between Person and Club in this diagram? Person…

A: Note: Since the Question is multiple hence we are advised to do only one question. Question 8.…

Q: According to the data model, is it required that every entity instance in the PRODUCT table be…

A: Database Management System(DBMS) is a software for storing and retrieving users data while…

Q: 4 What is the type of the relationship in the following figure? * Employee Organization Association…

A: To Do: To recognize the relation.

Q: draw Er model : for the entity( booking,movie show, ticket, user, employee,payment) with the…

A: ER DIAGRAM for given entity is given below we use following entity  booking  Movie show  Ticket…

Q: b) Draw the EER specialization diagram for the schema below Students (SID, Name, Address, Age)…

A: Enhanced Entity Relationship(EER) Model   Specialization Specialization is a process that defines a…

Q: An entity type whose existence depends on another entity type is called a entity. Select one: O a.…

A: The answer of the question is given below

Q: For the following collection of entities, give the assumptions concerning the relationship between…

A: In EMPLOYEE table, EMP_CODE is primary key. In BUILDING table BLDG_CODE is primary key, And EMP_CODE…

Q: Describe the entity-relationship model and how it works.

A: Entity relationship: Entity relationship models are based on the relationships between real-world…

Q: Give some examples of relationships and their cardinalities?

A: The mapping of entities, i.e. zero, one, or many, is known as cardinality. It describes how one…

Q: What are the applications of entity-relationship diagrams? What kind of symbol is used to depict a…

A: Answer : application of entity relationship diagram : It is to simply understanding the relationship…

Q: We can convert any weak entity set to a strong entity set by simply adding appropriate attributes.…

A: Answer: firstly we should know about what is weak entity set. Weak entity set definition:   1.An…

Q: 1. Draw the ER diagram corresponding to following relational model with all constraints Employee…

A: ERD  :-

Q: write the simple scenario for school system and draw the data flow diagram(DFD) and…

A: Actually, database is  a used to stores the data.

Q: Create an entity relationship diagram and the relational diagram

A: ANSWER: Entity Relationship Diagram: An entity relationship diagram, otherwise called an entity…

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: 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: Give some specific guidelines for defining entity types?

A: Given: Give some specific guidelines for defining entity types?

Q: Produce an entity relationship diagram of the Grand villa Hotels system described above.

A: According to the information given:- We have to produce ER diagram of the Grand villa Hotels system.

Q: Consider you are instructed to create reports that extracted data from a customer relationship…

A: A:-Profession_id is a shared attribute for linking two table B:- Select customers. name,…

Q: If you are reading a flat file, with minimal information regarding business rules and constraints.…

A: Solution:Even though the file contains minimal information about business rules and constraints,…

Q: Describe what an entity-relationship model is and how it functions in your own words.

A: Given: Real-world entities and their connections inform entity relationship models.  ERM. Entity…

Q: Demonstrate your understanding of the Entity-Relationship Model and its function.

A: Introduction: A problem domain's information structure is represented in terms of entities and…

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: What is the degree of relationship?Give an example of a relationship of degree three

A: DEGREE OF RELATIONSHIP -  The particular number of type of entities which participate into a given…

Q: Define the term entity and give an example other than those used in this book.

A: Answer: An entity may be an object with a physical existence (for example, a particular person,…

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.