Consider an E-R diagram containing 2 strong entities A and B. The cardinality ratio between the two entities is M:N and one entity contains a multi-valued attribute. What is the minimum number of tables required to represent the above scenario? a. 3 b. 4 c. 5 d. 6

Q: Model each of the following constructs inanE-R diagram: composite attribute,multivalued attribute,…

A: Model each of the following constructs inanE-R diagram: composite attribute,multivalued attribute,…

Q: Compare and contrast the different representations of a 1:M relationship in an ER model and a OODM…

A: The definite examination on the E-R model and Object Oriented data Model (OODM) is given as follows…

Q: Derive relations from conceptual model to logical data model. Identify the PK and FK.

A: Logical data model The aim of the logical design is to convert the conceptual data  to the logical…

Q: 3. Pick any of the above systems and design the Entity-Relationship Diagram (ERD) for that system…

A: Due to the bartleby policy we can solve only one question. So kindly repost the remaining one again.…

Q: Q1 / answer the following: 1- The difference between relational data model and entity- relationship…

A: 1. In Relational data model , the relationship between entity is represented using table. While…

Q: Can you convert this ER diagram to simple text that anyone understand it without entities ,…

A: Personal vehicle database : Defines each and every attributes and entity work in detail ...

Q: Consider the generalization and specialization lattice structure below (attributes not shown).…

A: Given: Consider the generalization and specialization lattice structure below (attributes not…

Q: Consider an E-R diagram in which the same entity set appears several times, with its attributes…

A: Through the use of a collection of individuals we also ignore relationships The pattern. The E-R…

Q: Regards to the diagram below (figure 4.12), answer the following questions using the multiple-choice…

A: The answers for the following question can be derived from the diagram given. How is of_type…

Q: An attribute that may take on more than one value for each entity instance in ERD is referred to as…

A: Answer :- option D) multivalued attribute

Q: Draw an ER diagram expressing the total participation of an entity type “BURGER” in a binary…

A: Answer: I have given answered in the handwritten format in brief explanation

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: Consider the below ERD in Figure 03 of Student Enrolment system and answer the below questions.…

A: List the strong (non-weak) entity types in the ER diagram. Student Enrollment Lecturer Subjects…

Q: nvert the following ERD in Chen's notation to an ERD in IE notation. All entities, attributes, and…

A: The answer for the given question is as follows

Q: Extract and write down the DB Schema for the following E-R Diagram. You need to write the name,…

A: Terminology used in this E-R diagram:

Q: Which one is correct Consider the following ER diagram depicting the relationship of an employee and…

A: To Do: To choose the correct option.

Q: Describe how the relationship (1:M) of an E-R diagram is transformed into relations

A: Relations:: The entity relationship (ER) information model has existed for over thirty five years.…

Q: 3. Figure 2 shows an Entity-Relationship (ER) diagram for a University dining service a) Develop a…

A: MENU( Menu ID, Menu Desciption, Menu Type) EVENT( Event ID, Event Date, Event Location, Event Time)…

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: Describe the most common way in which relationships in an E-R diagram are expresses in a…

A: ER  diagram ER  diagram is defined as the interconnection of entities and attributes how they are…

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: By simply adding relevant properties, we may turn any weak entity set into a strong entity set. So…

A: Answer: We must first understand what a weak entity set is. Insufficient entity set definition:…

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: Transform an E-R (or EER) diagram into a logically equivalent set of relations.

A: A well-structured relations are obtained when remodeling EER diagrams into relation. But a…

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: In an entity-relationship model, which of the following is a kind of attribute that should have some…

A: Required attribute is an attribute that must have a value in it. hence, it can not be left empty.

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: A weak entity set can always be made into a strong entity set by adding to its attributes the…

A: To convert a weak entity set to a string set, simply add the primary key attributes from its…

Q: What is the main role of an ER diagram in data modelling? How many courses each student can have?…

A: What is the main role of an ER diagram in data modeling? An entity-relationship diagram, or ER…

Q: 6. Consider the scenario described by the statement “A customer can make many payments, but each…

A: ER Diagram has been designed in Crow' Foot Notation for the given statement " A Customer can make…

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: ) Identify ALL errors and correction on the entity relationship diagram (ERD) given in Figure 5.…

A: Entity Relationship Diagram

Q: Subject: Database Identify ALL errors and correction on the entity relationship diagram (ERD) given…

A: The er diagram with a mistake is highlighted in figure 1 and correct er diagram is given below in…

Q: Part 3: Denormalization – Pick one of the three common relationship types that often give an…

A: DENORMALIZATION: denormalization, the opposite of normalization to increase the performance…

Q: Should the cardinality between entities be translated/read from both ends of the notation when…

A: Introduction: Cardinality: Cardinality refers to the maximum or lowest number of components…

Q: Consider the E-R diagram for a university database as shown in Figure 1. What is true about grade?…

A: “grade” represents an entity associated with the relationship “takes” in the given…

Q: Exercise 4-2, Figure 4-24 shows a possible data model for cocktail recipes. The Many–Many…

A: Below is the answer:

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: Translate the following ER Diagram into relational model. Show different relations that will result…

A: Please find below the relational model for the ER diagram mentioned above: Newspaper (newsPaperID…

Q: a) Consider the given schema. Instructor(id, name, dept, address, age, phn_number) Student(s id,…

A: here we have given the hand written images of mapping cardinalities and normalized data upto 3nf

Q: Consider the following entity relationship diagram (ERD). where two entities E1 and E2 have a…

A: You have asked multiple questions so we will answer the first one for you. If you want any other…

Q: relationship between entities and attributes.

A: EMPLOYEE(EMP_NUM, EMP_LNAME, EMP_INITIAL, EMP-DOB) Here, primary key = EMP_NUM DEPENDENT(EMP_NUM,…

Q: Use ER Assistant to draw your diagram.  Transform the following M-N relationship into an associative…

A: ERD: ERD stands for Entity Relationship Diagram. This is a diagram which is used to show the…

Q: Consider two entity sets A and B that both have the attribute X (among otherswhose names are not…

A: Here ,  1. X is the primary key for A but not B Means X in B is refer as a foreign key for A .  2. X…

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.