Discuss the differences between entity, instance of an entity, and relationship.

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

A: Answer:

Q: For each entity, there needs to be an indication of whether it is one-to-one, one-to-many or…

A: The answer is

Q: What does cardinality indicate in an entity-relationship diagram? 1:The unique identification for…

A: Introduction: This question is about the unique identifier for which data is stored. The…

Q: QUESTION 1 Which of the following views is represented by the entity relationship diagram (ERD) as…

A: Question :-

Q: Analyze the given entity relationship diagram and answer the following questions.   What is the…

A: Part(1) Degree of relationship is basically the number of entities that in general participates in…

Q: Entity Types PERSONNEL (personnel_id, fname, Iname, date_birth, place_birth) • PLAYER…

A: ER diagram stands for Entity Relationship diagram. It contains mainly 3 components that are…

Q: Exactly what would you store in an entity subtype?

A: Object Subtype To cut down on the overall number of attributes for each entity, entity subtypes are…

Q: explain and differentiate between strong entities and weak entites and juxtaposed with strong…

A: In this question we need to explain and provide differences between weak and strong entities in…

Q: A weak entity is defined as one that does not meet the requirements of any of the two criteria…

A: Let's have a look at the solution. Two criteria must be fulfilled in the order to be classed as a…

Q: Exactly what would you store in an entity subtype?

A: Introduction Subtype: Modeled entities can be specialized into subtype entities, commonly known as…

Q: An entity in X is connected numerous entity in Y, however an entity in Y is associated to only one…

A: Here  one entity in one set is related to more than one entity in other set.

Q: Can weak entities have foreign keys in entity relationship diagram

A: The, answer has given below:

Q: Was cardinality ever used as a representation of anything in an entity-relationship diagram? 1:The…

A: INTRODUCTION : Foundation This question is from Database Management System, a Computer Science…

Q: In a few words, describe the logical link between the entities entity, attribute, and relationship.

A: According to the question An entity is a distinguishable actual-international object that exist. An…

Q: Which of the following is the term for whether or not an instance of one entity class must…

A: Ordinality refers to the sequence or order in which instances of one entity are associated with…

Q: Give an Example of a weak entity and its identifying relationship?

A: Note: There are multiple questions are given in one question. According to the rule, you will get…

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: Describe the various types of relationships in entity-relationship diagrams (ERDs), such as…

A: A key tool in database architecture, entity-relationship diagrams (ERDs) enable us to visually…

Q: Define the terms "entity," "attribute," and "relationship" in the context of data modeling. How are…

A: A database system is a software application or infrastructure that plays a pivotal role in managing…

Q: Describe the primary components of an entity-relationship diagram, including entities, attributes,…

A: Given,Describe the primary components of an entity-relationship diagram, including entities,…

Q: What is the precise definition of a weak entity type? What is the undisclosed information? Could you…

A: Answer is given below

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: is the relationship between a weak entity type and its owner. Select one: a. associative entity b.…

A: Identifying relationship is the relationship between a weak entity type and its owner.

Q: Give a detailed description of an entity. Define and illustrate with sample an Entity Relationship…

A: Entity: It is described as a real-world object. It has a physical existence and a conceptual…

Q: It's not immediately clear what distinguishes a weak entity from a strong entity that requires a…

A: Entity is a real world object or thing with independent existence. Entities are independent and can…

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: 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: Define when an attribute from one entity type should be extracted and inserted into another

A: The answer is

Q: Explain and differentiate between      i. strong entities and weak entities     ii. Strong…

A: The differences are given in the below step Happy to help you?

Q: What is the purpose of entity-relationship diagrams? What sort of symbol is used to depict a…

A: Given: What are entity-relationship diagrams used for? What kind of symbol is used to represent a…

Q: 1. List down the types of attributes in the Entity-Relationship (ER) model.

A: Given: 1. List down the types of attributes in the Entity-Relationship (ER) model.

Q: Produce an ERD from a given scenario using correct: Notations Naming conventions  Relationships.

A: Entity-Relationship Diagram: It is a graphical representation of Entity-Relationship Model. Purpose…

Q: What exactly is meant to be accomplished by using an Entity-Relationship Model, and how is this…

A: An Entity-Relationship (ER) Model is a data modeling technique used to describe and analyze data and…

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.