Identify foreign key(s), if any, in either employee or project. Show how the project entity set and its relationship to employee would be represented on the E-R diagram. Assume that you wish to represent the number of hours an employee is assigned to work on a project and show that in the diagram.

Q: n the attached diagram, which of the following statements are true?       primary key for section…

A: Weak entities are represented with double rectangular box in the ER Diagram and the identifying…

Q: In your group, you will need to create an entity relation (E-R) diagram using the Crow's foot…

A: Given, The answer is given below Note: As Microsoft Visio is paid software(Unavailable freely). so,…

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: Consider the E-R diagram in Figure 8.9, which contains specializations, usingsubtypes and subtables.…

A: Solution: It is not possible to create a schema where a person is both the employee and a student

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

A: The answer is

Q: for part of a BANK database. Consider the ER diagram shown in . Each bank can have multiple…

A: The list of non - weak / strong entity types in the ER diagram are as follows:  • LOAN • CUSTOMER •…

Q: A weak entity set may always be turned into a strong entity set by adding the primary-key attributes…

A: A weak entity set may permanently be transformed into a strong entity set by including the main…

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: 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: If a student studies more than one major, the "Major" attribute in the "Student" entity is called: *…

A: - We need to choose the correct out of the given.

Q: Consider the following parking tickets.  Create ERD using Crow’s Foot notation with relationship…

A: St_ID L_Name F_Name Phone_No St_Lic Lic_No Ticket# Date Code Fine 38249 Brown Thomas 111-7804 FL…

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

A: Here we have two entity Employee and Department The relationship between them is work_in. Employee…

Q: Bell State University Scenario Draw a detailed ERD with primary keys, foreign keys, and all…

A: An entity relationship model describes the structure of a database with the help of a diagram which…

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: 1. Which of the following represents an iterative process of systems development in which…

A: As per guidelines we are suppose to answer 1st question  Prototyping is an exploratory cycle where…

Q: Summarise the ERM's components, and names the entities and their relationship (As given in the…

A: ER Diagram :

Q: weak entity set may always be transformed into a strong entity set by including the primary-key…

A: The given problem is related to database design where the concept of identifying and weak entity is…

Q: A person can be an employee, alumnus, or a student. For a person, P_id (identifier), date of birth,…

A: ERD for the given requirement: No of Entities: Person entity Employee Alumnus Student Staff Faculty…

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: Consider the entity set employee with attributes empid, CNIC#, empname, jobtile, salary and project…

A: Given entities: Employee and Project Employee empid, CNIC#, empname, jobtile, salary Project…

Q: Create an Entity-Relationship Model to represent the data requirements of the problem given below.…

A: The given scenario has Six entities Branch, Staff, Product, Customer, Vendor, Sale. Sale is only…

Q: If a student studies more than one major, the "Major" attribute in the "Student" entity is called: *…

A: 1. If a student studies more than one major, the "Major" attribute in the "Student" entity is called…

Q: Create an Entity-Relationship Model to represent the data requirements of the problem given below.…

A: ERD for the given requirement: No of Entities: Person entity Employee Alumnus Student Staff Faculty…

Q: In the space provided below the following ERD, transform the following M-N relationship into an…

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

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: 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: 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: 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: 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: 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: If a student studies more than one major, the "Major" attribute in the "Student" entity is called: *…

A: The answer is given in the below step

Q: Using the above table structure, create a normalized Entity-Relationship Model (ERM). Identify…

A: Solution:- One table should be order table(order no,order date,customer no), Customer…

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

A: Entity Relationship Diagram

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: 4. Using the following sample relation and your knowledge of declarative constraints: STUDENT…

A: Due to company policies I m compelled to solve only one question and that is the first question. The…

Q: Qn 4: Draw an ERD using the following scenario: Prepare an Entity Relationship Diagram (ERD) showing…

A: Draw ER-diagram for the given information about Database.

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: In your group, you will need to create an entity relation (E-R) diagram using the Crow's foot…

A: Answer: 1. Entities:   A representation of a group of items is referred to as an entity. It might be…

Q: Give a Relational Model that corresponds to the Entity-Relationship Diagram given below: address M…

A:

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: Consider the scenario described by the statement "A customer can make many payments, but each…

A: Explanation: The Scenario “A customer can make many payments, but each payment is made only by one…

Q: Consider an E/R diagram which has information about students, courses, and enrollments, where…

A: Entity Relationship Diagram: Entity Relationship Diagram, also known as ERD, ER Diagram or ER model,…

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…

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.