person ID пате address employee student salary tot_credits instructor secretary rank hours_per_week Figure 8.9 Specialization and generalization.

Q: Part 2) You are asked to design a conceptual data model using ER /EER diagramming for the business…

A: rectangle shows an entity oval shows attributes diamond shows relationship between two entities

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

A: As asked in this question we need to describe the E-R Diagram in an organised way and to do that we…

Q: Defintion of the Enhanced Entity-Relationship (EER

A: Defintion of the Enhanced Entity-Relationship (EER) model? Answer: Enhanced entity-relationship…

Q: 2. Consider the ER diagram on the next slide. (i) What is the key of entity set A (ii) What is the…

A: When an attribute is emphasised in an ER diagram, it is said to be a key attribute.As a result, the…

Q: Prepare an E-R diagram for a real estate firm that lists property for sale. Identify all entities…

A: To make er diagram of above problem, we need to find the attributes and entity, relationship between…

Q: E-R diagram

A: Given :-  An airline company has multiple aircraft. Each aircraft has multiple flights. Each flight…

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: Translate the E/R diagram that you draw in the previous question into a set of relations, clearly…

A: Given Figure :-

Q: Draw a single ER diagram for the following as described above: A Foo is related to at least one…

A: Solution: An entity relationship diagram (ERD) is a common database diagram that shows the system…

Q: Draw a single ER diagram that represents the specifications listed below. Follow the process below…

A: The ERD or Enity-Relation Diagram represents the attributes of a schema and how all of them are…

Q: Read the case study and find the entities and attribute and make ERD Diagram?   Car Dealership…

A: Entity relation ship UML diagram

Q: The ER diagram below model the football league games and contains three entities and three…

A: The answer is

Q: Draw an E-R diagram to model the following situation. Be sure to include in your diagram all the…

A: The E-R diagram consist of following attributes and Relationship Bus(fleetNumber  , make,…

Q: an ER diagram of ONLINE COURSE REGISRATION database, that captures all the given below requirements.…

A: Lets see the solution.

Q: Consider the E-R diagram for a university database as shown in Figure 1. What does deparment…

A: Entity In the Entity-Relationship diagram, department represents entity. An entity is an object in…

Q: An instructor has several phone numbers.  When reducing the ER diagram down to a schema this must be…

A: Actually, ER is describes the structure of database with help of diagram.

Q: Design an Enhanced Entity Relationship diagram (EERD) by referring the below given scenario. Use…

A: Objective: An Enhanced ERD should be designed for all the employees working in a technical…

Q: 3. Translate the E-R diagram into a relational model stating all tables, their primary keys,…

A: Solution::   An Entity Relation diagram is mention in the above given question       Need to…

Q: 4.2 Draw an Entity Relationship Diagram (ERD) using Unified Modelling Language (UML) notation…

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

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: Develop/create a Decision Table and Decision Tree that represents the registration system at your…

A: I will explain it in details,

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: 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: A relationship between cash receipt and customer for an enterprise has cardinalities (0,1) cash…

A: Given: A relationship between cash receipt and customer for an enterprise has cardinalities (0,1)…

Q: Use ER Assistant to draw your diagram.   Draw a generalization hierarchy containing Employee,…

A: Answer :

Q: diagram is a graphical representation of an information system, illustrating relationships among…

A: A(n) __________ diagram is a graphical representation of an information system, illustrating…

Q: Consider the following context diagram and state whether the following statements are correct or…

A: Consider the following context diagram and state whether the following statements are correct or…

Q: An E-R diagram usually models the state of an enterprise at a point in time.Suppose we wish to track…

A: Changes to data over time are referred to as temporal changes. In ER diagrams, temporal changes are…

Q: What is Entity relationship modeling produce an entity relationship diagram for the scenerio below;…

A: Entity relationship modelling is a conceptual model which mainly contains three components that are…

Q: Draw an ER diagram for the airport database. Be sure to indicate the various attributes of each…

A: ER : ER Diagram stands for Entity Relationship Diagram, also known as ERD is a diagram that displays…

Q: Create a Crow's Foot ERD Model for a Train Station with these entities. I already did the ERD…

A: Consider the ER Diagram for the train station. The ER diagram has following entities:   Train…

Q: Draw an ER diagram for online shopping Database that captures given below requirements. Specify key…

A: ER diagram has been attached below.

Q: Draw an E-R diagram for a patient appointment system. Consider the entities patient, patient…

A:

Q: Q3- Draw an ER diagram of COMPANY database, that captures all the given below requirements. Specify…

A: The solution for the above-given question is given below:

Q: Describe how the composite attribute of an E-R diagram is transformed into relations

A: Given: Describe how the composite attribute of an E-R diagram is transformed into relations…

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: Create an Entity Relationship diagram (ERD)

A: To draw a ER diagram for the given scenarios A division operates many departments, but each…

Q: Prepare an E-R diagram for a real estate firm that lists property for sale. Identify all entities…

A: The ER diagram is made clear step by step manner. See below step for diagram.

Q: Create an ER-Diagram which models the various Departments, Courses, Students, Employees of School of…

A: An entity-relationship diagram (ERD), often called an entity-relationship model, is a graphical…

Q: Prepare an E-R diagram for a Aqarat (real estate) Company that lists property for sale. The…

A: Hey there, I am writing the required solution based on the above given question. Please do find the…

Q: Consider a database that includes the entity sets student, course, and sectionfrom the university…

A: Below is the required E-R Diagram: - Explanation: - The ternary relationship is a type of…

Q: Using this completed instance diagram fill in the cardinality symbols for the ERD below. You will…

A:

Q: Step 1: Data Modeling - Create an ER diagram: Draw an ER diagram that captures the preceding…

A: Here is the answer:-

Q: What exactly is the weak entity type? What is the key to it? Give an example what is an altrubute…

A: There are two types of weak entities: associative entities  subtype entities. The latter represents…

Q: Describe how the relationship (supertype/subtype) of an E-R diagram is transformed into relations

A: A supertype type is a typical business type that is affiliated with one or more subtypes. The…

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

A: Entity relationship diagram: An ER diagram is a visual representation of the entities and their…

Q: b) Identify an attribute in the ER diagram that could represent a derived attribute and explain…

A: Derived attribute is an attribute which can be derived from other attributes.

Q: Map the ER diagram to its correspond relational model, identify the relationship and map the…

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

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.