ER Diagram Notes

Consider the following entity relationship diagram. Booking Employee Room Building • Booking ID • Employee ID • Building ID • Room ID • First Name • Room ID P • Name Description • Employee ID • Name Last Name • Date • Campus Zone • Email Address • Capacity • Start Time • Map Coordinates Phone • Bookable • End Time For each statement below, use the drop-down box to indicate whether it is true (answer 1) or false (answer2), according to the design decisions encoded in the ERD. Every booking is associated with exactly one employee. ✓ Every employee is associated with at most one booking. ✓ A building may contain no rooms that are recorded in the database. Each room may have many bookings. 1. True ✓ A room must have at least one booking. 2. False ✓ A booking can be associated with many employees. An employee may have no phone number recorded. ✓ A room must have its capacity recorded. ✓ A building is uniquely identified by its map coordinates.

Which of the following is a key part of conceptual design in an entity relationship model?     This model uses column names instead of attributes. In this model, the characteristics such as location, path, and format are described. This model converts entities into tables. In this model, no primary keys are specified in the entities.

draw the er diagram and label

Modify the Er diagram given below and add 5 to 6 more additions to it such as entities attributes relationships etc

Code for Mapping relationship with Entity Framework Code First: One-to-one and variations

Create a conceptual model In your conceptual diagram, you need to show all the relationships and data types apply (include all the entities from the case study above)

according to this Class diagram, i need you to draw Entity–relationship diagram  Note : Please this diagram contains  a 3 step  1-Conceptual ER 2-Logical ER 3-Physical ER Thank you :)

build an entry relationship diagram using the data provided. example of graph included.

Draw an Entity Relationship diagram for modeling the following system. Use relational modelling techniques in your design. You are free to make reasonable assumptions for your model unless they conflict with the definition below. Also explain your design with a paragraph. [Caution: Create your solution using paper and pen. Then put the image of your solution here. Drawing/writing with computer tools will not be accepted. Also include your name and signature in the solution paper]Problem definition: “There is a need to keep track of data for a hospital. The hospital building consists of several departments. Each department is identified with its name. For each department, the following data should also be stored: the number of floors, opening hour, and closing hour. Each department has a number of rooms. Each room is identified by its room number, but there might be rooms with the same name in different departments. At each department, many doctors and nurses can work.A doctor is…

Question=1)DRAW : Matrix diagram of this entities project will be about a student attendance. Entities: student, course, instructor, attendance, enrollment, department, class. Relationships: Student is enrolled in course, Course has instructor, Department has many courses, Entities: 1. Student - Attributes: Student_ID (Primary Key), Name, Age, Email, Phone _Number 2. Course - Attributes: Course_ID (Primary Key), Course_Name, Department_ID (Foreign Key) 3. Instructor - Attributes: Instructor_ID (Primary Key), Name, Department_ID (Foreign Key) 4. Attendance - Attributes: Attendance _ID (Primary Key), Student_ID (Foreign Key), Course_ID (Foreign Key), Date, Status 5. Enrollment - Attributes: Enrollment_ID (Primary Key), Student_ID (Foreign Key), Course_ID (Foreign Key), Enrollment Date 6. Department - Attributes: Department_ID (Primary Key), Department_Name 7. Class - Attributes: Class_ID (Primary Key), Class_Name, Department_ID (Foreign Key) Draw Matrix diagram of this scaniorio

ENHANCE ENTITY RELATIOSHIP DIAGRAM The entity type PERSON has the following attributes: SSN, name, address (City/State/Zip), date of birth, age, and contact number. The entity also has the three subtypes: CAMPER, BIKER, AND RUNNER. Draw a separate diagram segment for each of the following situations:  1. At a given time, a person must be exactly one of three subtypes. 2. A person may or may not be one of these subtypes. However, a person who is one of these subtypes cannot at the same time be one of the other subtypes. 3. A person may or may not be the one of these subtypes. On the other hand,  a person may be any two (or even three) of these subtypes at the same time.  4. At a given time, a person must be at least one of these subtypes.

Prepare an E-R diagram for a real estate firm that lists property for sale. Identify all entities (supertype/subtype), attributes (optional/required), unique identifiers, relationships and relationships cardinality and optionality. Resolve any M-M relationship you find. • The firm has several sales offices in several states. Each sales office has Office_Number and a Location. • Employees are assigned to work in different sales offices. Each employee has an ID and Name. • An employee must be assigned to only one sales office. For each sales office, there is always one employee assigned to manage that office. For each manager we record the start date of the management job. • The firm lists properties for sale. Each property has an ID, description and Location. Each unit of property must be listed with one (and only one) of the sales offices. A sales office may have any number of properties listed. • Each unit of property has one or more owners. owners have ID and Name. An owner may own…

Please convert the question to an entitty relationship diagram with 1:M labels, and shapes. E.g. diamond, oval etc...

Create an ERD for a car dealership and also show entity names, primary keys, attributes for each entity, relationships between the entities and cardinality. The dealership sells both new and used cars, and it operates a service facility. Base your design on the following business rules: A salesperson may sell many cars, but each car is sold by only one salesperson. A customer may buy many cars, but each car is bought by only one customer. A salesperson writes a single invoice for each car he or she sells. A customer gets an invoice for each car he or she buys. A customer may come in just to have his or her car serviced; that is, a customer need not buy a car to be classified as a customer. When a customer takes one or more cars in for repair or service, one service ticket is written for each car. The car dealership maintains a service history for each of the cars serviced. The service  records are referenced by the car’s serial number. A car brought in for service can be worked on by…

Draw and ERD digrame for my home work . Below are the standers that should be meet 1) Correct identification of all the entities. Entity names should follow the standard conventions, i.e., they should be singular nouns and written in CAPITAL letters, or at least the first letter is CAPITAL. 2) Correct identification of all the attributes for each of the entities .Correct identification of all the relationships with appropriate connectivity and participation. If the connectivity and/or participation are not clear from the assignment specification, the assumptions made should be clearly stated.3) Introduction of composite/bridging entity to represent many-to-many relationships. 4) Correct representation of strong and weak relationships (solid and dashed line) 5) Correct identification of all the primary keys and foreign keys. The primary keys should be underlined, and foreign keys should be italic.

What are the applications of entity-relationship diagrams? What kind of symbol is used to depict a relationship? What exactly is a "associative entity"? Please provide an example.

Entity-relationship diagrams have a specific function, which is explained below. And what kind of symbol is utilised to represent a relationship, and how does it function? In what way does the word "associative entity" convey that something is happening and what does it mean? Could you provide an example?

Prepare an Entity Relationship Diagram for the application described in the following paragraph. Pick and Shovel Construction Company is a multi-state building contractor specializing in medium-priced town homes. Assume that Pick and Shovel’s main entities are its customers, employees, projects and equipment. A customer can hire the company for more than one project, and employees sometimes work on more than one project at a time. Equipment, however, is assigned to only one project at a time. Draw an ERD showing those entities.

Draw an EER diagram for the following problem using this text's EER notation, the Visio notation, or the subtypes inside supertypes notation, as specified by your instructor. A nonprofit organization depends on a number of different types of persons for its successful operation. The organization is interested in the following attributes for all of these persons: SSN, Name, Address, City /State/Zip, and Telephone. Three types of persons are of greatest interest: employees, volunteers, and donors. Employees have only a Date Hired attribute, and volunteers have only a Skill attribute. Donors have only a relationship (named Donates) with an Iten1 entity type. A donor must have donated one or more items, and an item may have no donors or one or more donors. There are persons other than employees, volunteers, and donors who are of interest to the organization so that a person need not belong to any of these three groups. On the other hand, at a given time a person may belong to two or more…

Draw an E-R diagram for each of the descriptions below. Q -An architectural design firm has a number of design projects underway at any point in time. Each of these projects is identified by a unique project identification code. Additional data stored for each project includes a description, a target completion date, and a dollar budget amount. Design associates staff these projects. These associates include architects, engineers, and computer CAD (Computer-Aided Design) specialists. Each associate is identified by a unique code. Other information about associates includes their name, specialty, their level. There are three levels of associates (gold, silver, and bronze). The bronze associates report to one and only one silver associate (who typically has at least one bronze associates reporting to her), and the silver associate reports to a gold associate in the same fashion. Each project staffed by at least one associate staff. It is also common to find any particular associate…

Use ER Assistant to draw your diagram.   Draw a generalization hierarchy containing Employee, Administrator, and Faculty entities.  The Employee entity is the supertype, and the Administrator and Faculty entities are the subtypes.  The Employee entity has attributes as follows:  EmpNo (primary key), EmpName, and EmpAddress.  The Administrator entity has attributes as follows: AdmTitle,  AdmContractLength The Faculty entity has attributes as follows:  FacTenure, FacRank The generalization hierarchy should be disjoint but not complete.

Suppose that we wish to keep a genealogy. The information we wish to record about each person includes their name, date of birth, phone number, and degrees obtained . We also need to keep track of the mother, father, and children of each person. Draw a complete Entity-Relationship diagram. You must include all the details, sad as keys, weak entities (if any), cardinality constraints, etc. Your diagram must avoid redundancy.

Use Lucidchart to draw an ERR Diagram with this information: EER Diagram for Royal Victoria Hospital Information System Assumptions: The diagram focuses on the entities and relationships. Attributes with cardinality are assumed to be single-valued. Dates are assumed as identifiers for visits. Entities: Person: (person_ID, name, address, birth_date, phone_number)   Employee: (inherits from Person, date_hired)   Nurse: (inherits from Employee, certificate) Staff: (inherits from Employee, job_class) Technician: (inherits from Employee, skill)   Physician: (inherits from Person, speciality, pager_number)   Patient: (inherits from Person, contact_date, resident_flag)   Outpatient: (inherits from Patient) Resident: (inherits from Patient)   Visit: (date, comments, outpatient_ID)   Care Centre: (name, location)   Laboratory: (name, location)   Bed: (bed_number, room_number, care_centre_ID)   Item: (item_number, description, unit_cost)   Treatment:…

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When an attribute of one entity type references another entity type's attribute, this means that: O it is a derived attribute O weak entity type exists O a relationship exists O it means nothing

(a) Draw an Entity-Relationship (ER) diagram which models the scenario described below. Your diagram should include entity types, relationship types, attributes and constraints. The Red Car Company (RCC) is a car hire company, with the distinctive feature that all its cars are the same bright red colour. Your diagram should model the following: • Drivers, including their name, driving licence number, date of birth and address. • Cars, including their registration number, make and model. • Accidents, including the date and time, and the RCC car and driver involved. • Each occasion on which a driver hired a car, including the driver, the car, the start date and the length of the hire in days. • The RCC only permits people to hire cars as long as they have had fewer than four accidents. • Cars which have had ten accidents are always disposed of and are not used for hiring. (b) It is proposed that when a new student who suffers from epilepsy starts a degree programme in the School of…

Please include the eer diagram

What exactly are entity-relationship diagrams, and how do they come into play? What kind of symbol is utilized to represent a relationship? What is an associative entity, and how does it work? Give an illustration of your point.