Use the following business rules to create a Crow’s Foot ERD. Present all appropriate connectivities and cardinalities in the ERD. A department employs many employees, but each employee is employed by one department. Some employees are not assigned to any department. A division operates many departments, but each department is operated by one division. An employee may be assigned many projects, and a project may have many employees assigned to it.

Use the following business rules to create a Crow’s Foot ERD. Present all appropriate connectivities and cardinalities in the ERD. A department employs many employees, but each employee is employed by one department. Some employees are not assigned to any department. A division operates many departments, but each department is operated by one division. An employee may be assigned many projects, and a project may have many employees assigned to it.

Oracle 12c: SQL

3rd Edition

ISBN:9781305251038

Author:Joan Casteel

Publisher:Joan Casteel

Chapter1: Overview Of Database Concepts

Section: Chapter Questions

Problem 4RQ

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Use the following business rules to create a Crow’s Foot Entity Relationship Diagram. Write all appropriate connectivities and cardinalities in the ERD. Add other linking entities as needed. • A department employs many employees, but each employee is employed by one department. • Some employees, known as “rovers,” are not assigned to any department. • A division operates many departments, but each department is operated by one division. • An employee may be assigned many projects, and a project may have many employees assigned to it. • A project must have at least one employee assigned to it. • One of the employees manages each department, and each department is managed by only one employee. • One of the employees runs each division, and each division is run by only one employee.
To manage the materials of a factory, please give the E-R diagrams. Such entity sets are involved as below: Warehouse: with attributes as Number, area and telephone Accessory : with attributes as number, Name, Specification, price and description Supplier: with attributes as Number, name, address, telephone and асcount Project : with attributes as number and budget Employee : with attributes as number, name and age
Draw an ERD for the following problem:Company organized into departments. Each department has unique, name and a particular employee who manages the department. Start date for the manager is recorded. Department may have several locations. A department controls a number of projects. Projects have a unique name, number and a single location. Company’s employees name, ssno, address, salary, sex and birth date are recorded. An employee is assigned to one department, but may work for several projects (not necessarily controlled by her dept). Number of hours/week an employee works on each project is recorded; the immediate Supervisor for the employee. Employee’s dependents are tracked for health insurance purposes (dependent name, birthdate, relationship to employee).
Below is a sample of an assignment roster of employees working in a company. An assignment involves a specific job given to a specific employee, on a specific date and time, and in a specific section of a specific building. Very specific. You've identified the following entities: Assignment, Employee, Section, Building, Job. No others. Use the information below to infer which entities have relationships with each other, as well as the types of those relationships, and constraints if any. All that you should submit is a set of the relevant business rules. Once again, remember that entities don't necessarily directly connect, unless the information collected specifies that they are connected. In case you need extra info: ● Section is a kind of code given to a section in a specific building. Each section has a completely unique code (across all buildings) e.g. F3 only exists in building "Flora", not any other building. ● Section N is short for "section name"; it's the name of the section…
Use the following business rules to create a Crow’s Foot ERD. Write all appropriate connectivities and cardinalities in the ERD. a. A department employs many employees, but each employee is employed by one department. b. Some employees, known as “rovers,” are not assigned to any department. c. A division operates many departments, but each department is operated by one division. d. An employee may be assigned many projects, and a project may have many employees assigned to it. e. A project must have at least one employee assigned to it. f. One of the employees manages each department, and each department is managed by only one employee. g. One of the employees runs each division, and each division is run by only one employee. Given these data requirements, design a logical/relational data model for this company. Use Microsoft Visio for your diagrams. You can add substantial detail to your data model by including sample attributes for each of the entities. Specify primary and foreign…
Design the Entity Relationship Diagram (ERD) showing entities, attributes, primary key and relationship cardinality for the following scenario. Any employee works for only a department and under supervision of a manager (where manager is also an employee). Employee's address, city code & city name also has been recorded. Every employee may work for multiple project, but an employee may be on vacation and not assigned to any projects. Working hour may be different for an employee for different projects. Projects are broken into tasks; A task is created for one project and assigned to one department. Requisitions are made for projects; Each requisition could ask for any number of items; Items could be: equipment item or materials item and are coded in a similar way; Each requisition is for one project and is made to one supplier. The important data fields are employee_id, employee_name ,employee_address, employee_email, department_id, department_name, location, city_code, city_name,…
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A large bank operates several divisions. Information Technology (IT) is operated as one of these divisions. Within the IT division are many departments that are managed by one manager, and all IT employees belong to one of these departments. The IT division assigns its employees to one or more ongoing projects in the bank. A project may be planned, but not have any employees assigned to it for several months. Each project will have a single employee assigned who acts as a project leader. List the entities, attributes and relationships among entities to be included in the ER model. Identify the cardinality of each relationships and Draw on ER diagram
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A company has a number of employees. The attributes of FEMPLOYEE include Employee io (identifier), Name, Address, and Birthdate. The company also has several prolects. Attributes of (PROJECT include Project ID (identfier), Project Name, and Start Date. Each employee maybeassigned tp one or more projects or may not be assigned to a project. A project must have at least one emplovee assigned and may have any number of employees assigned. An employee's billing rate may vary by project, and the company wishes to record the applicable billing rate (Billing Rate) for each employee when assigned to a particular project. A). Draw ER Model For the companyB). Do the attribute names in this description follow the guidelines for naming attributes? If not, suggest better names.C). do you have any associative entities on your ERD? If so, what are the identifers for those associative entities?
A company has a number of employees. The attributes of FEMPLOYEE include Employee io (identifier), Name, Address, and Birthdate. The company also has several prolects. Attributes of (PROJECT include Project ID (identfier), Project Name, and Start Date. Each employee maybeassigned tp one or more projects or may not be assigned to a project. A project must have at least one emplovee assigned and may have any number of employees assigned. An employee's billing rate may vary by project, and the company wishes to record the applicable billing rate (Billing Rate) for each employee when assigned to a particular project. A. Draw ER Model For the company B. Do the attribute names in this description follow the guidelines for naming attributes? If not, suggest better names. C. to youhave any associative entities on your ERD? If so, what are the identifers for those associative entities?
Q2/II draw the entity relationship for each of the following: 1-" a student studies one or many modules and a module is studied by one or many students". 2-" a manager leads one or many employees and an employee is led by one and only one manager". 3-" a manager leads one or many employees and an employee is led by one and only one manager and if there is a manager who has no employees to lead". 4- "a classroom has one and only one lecturer to manage and a lecturer has one and only one classroom". 5- "each classroom has one or many students registered in and a student has one or many classrooms to be registered in".