Construct an Entity Relationship Diagram (ERD) in Crow’s Foot Notation for the following Nationwide City Express shipping system. Be certain to indicate identifiers and cardinality constraints. You may state any assumptions that you make.
Nationwide City Express (NCE) prides itself on having up-to-date information on the processing and current location of each shipped item. To do this, NCE relies on a company-wide
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- Create a Crow's Foot ERD Model for a Train Station with these entities. I already did the ERD Diagram! What are the Cardnitalities in the Diagram and give me an explanation for the Relationship? Entities: Train Station Schedule Passengers Route Stoparrow_forwardIBased on the given case scenario, you will need to create an entity relation (E-R) diagram using the Crow's foot symbols that models the problem. This will include: Summarise the ERM's components, and names the entities and their relationship all entities, relationships (including names) and attributes that are relevant, primary keys identified, and include relationship participation - participation (optional / mandatory) symbols and cardinality. Case Study The following business rules are provided from the description of operations: A customer may request many charter trips. Each charter trip is requested by only one customer. Some customers have not (yet) requested a charter trip. Every charter trip is requested by at least one customer. An employee may be assigned to serve as a crew member on many charter trips. Each charter trip may have many employees assigned to it to serve as crew members. An employee may not yet have been assigned to serve as a crew member on…arrow_forward1. Create an entity relationship diagram for the conceptual design using UML notation. The diagram can be created by hand or via some modeling tool. 2. Create a data dictionary for the entities, relationships and attributes. Make your best guess for representing the attributes. Schema 3 You have been hired by the Snowbird ski mountain resort to build a database for their data. The resort has ski mountain peaks, chair lifts, trails, stores and restaurants. For each mountain peak, you track the name, the elevation and its latitude and longitude. Each peak name is unique. The names of the mountain peaks are: Mount Superior, Mount Baldy, Twin Peaks and Hidden Peak. For each chair lift, you track a unique name, the vertical rise, the travel time, the number of people per chair (ranging from 2 to 4) , and its closing time. For each trail, you track its unique name, its elevation, its length, and the typical time it takes to complete. Each ski trail is classified by its level of…arrow_forward
- What is the difference between a feeble entity set and a robust entity set?arrow_forwardPrepare 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…arrow_forwardThe Acme Company wants to construct a database to keep track of the company’s employees, departments, and projects as well as the employee’s dependents. Draw the entity-relationship model. The requirements collected to date to be modeled are: The company is organized into departments. Each department has a name, a number, and an employee who manages the department. A department controls a number of projects, each of which has a name, a number, and a start date but not all departments have projects assigned to them. We store each employee’s name, social security number, address, salary, sex, and birth date. Every employee is assigned to a department but may work on several projects, which are not necessarily under the control of the same department. We keep track of the number of hours per week that each employee works on each project. For most projects, a team of employees is assigned to work on the project while some employees are never assigned to a project. We also keep track…arrow_forward
- need help to draw the ERD diagram for this: Revised Entity-Relationship Diagram (ERD) Proposal: Entities and Attributes: Users: UserID [PK] Username Password (Hashed and Salted) Email ProfilePictures: (New Entity) PictureID [PK] UserID [FK] PictureData (Reference/Path to Image File) Recipes: RecipeID [PK] UserID [FK] Title Description Image (Reference/Path to Image File) Ingredients: (Potential New Entity) IngredientID [PK] RecipeID [FK] Name Quantity Unit Comments: CommentID [PK] UserID [FK] RecipeID [FK] CommentText Timestamp Relationships: Users to ProfilePictures: One-to-One Users to Recipes: One-to-Many Recipes to Ingredients: One-to-Many Users to Comments: One-to-Many Recipes to Comments: One-to-Manyarrow_forwardDraw an Enhanced Entity-Relationship (EER) diagram that describes the following business environment.The National Association of Zoos (NAZ) wants to develop an information system to keep track of the zoos, animals, and related zoo objects and people associated with zoos in the US. Each Zoo in the U.S. has a unique name plus an address and a size in acres. Each state may have several zoos. In addition to the unique state name, the NAZ wants to record the state's governor and capital. Each animal in each zoo has an animal number that is unique across all NAZ zoos. Each animal also has a pet name (King, Rover, Fred, etc.), a species (tiger, eagle, shark, etc.) and a country of origin. An animal may be a bird, a mammal, a fish, or any of several other broad categories of animal, but a particular animal may be classified in only one of these broad categories. Additional data about birds include their length and wingspan. Additional data about fish include their weight and top swimming…arrow_forward1. Using this completed instance diagram fill in the cardinality symbols for the ERD below. You will probably need to use a basic drawing tool within Word to draw the cardinalities. Students Courses Student 1 Course 1 Student 2 Course 2 Student 3 Course 3 Students Courses StudentID Enrolls In CourselD Name TimeOffered BirthDate Location GPA 2. In the space provided below, draw an ER diagram containing Order and Customer entities connected by a 1-M relationship from Customer to Order. The relationship should be called "Places". Define minimum cardinalities so that an order is optional for a customer and a customer is mandatory for an Order. For the Customer entity type, define attributes as follows: CustNo (primary key), CustName, CustBalance. For the Order entity type, define attributes as follows: OrdNo (primary key), OrderDate, OrdAddress. Use ER Assistant to draw your diagram. Copy and paste the ERD from ER Assistant into the space provided below. [Note: To receive credit for this…arrow_forward
- When there is a many-to-one connection, the primary key of one entity acts as a foreign key on the other side of the connection. On the side where a significant number of different connections are outlined. From each perspective On the one hand, a certain connection is specified, while on the other, a different relationship is defined.arrow_forwardCreate ER duagram of the foloowing information and also find entity identification, Rekationship identification, Cardianlity identification, Identify attributes.arrow_forwardUsing er assistant create an Entity Relationship Diagram(ERD) with appropriate entries, relevant attributes, and relations to support the following business rules, and write a few lines to defend your erd. You need to design a database to keep track of clubs at a high school. Attributes: A student may only join one club Some students do not join at all Club needs to have one student Need to capture students: Name Address Year of grad All Phone numbers Club name Club advisor Meeting datesarrow_forward
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