Given the following business scenario, create a Crow’s Foot ERD using a specialization hierarchy if appropriate for one case study. 1. Two-Bit Drilling Company holds information about employees and their insurance dependents. Every employee has an employee number, name, date of hire, and title. If an employee is an inspector, then the date of certification and the renewal date for that certification should also be recorded in the system. For all employees, the Social Security number and dependent names should be kept. All dependents must be connected with one and only one employee. Some employees will not have dependents, while others will have many dependents
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Given the following business scenario, create a Crow’s Foot ERD using a specialization hierarchy if appropriate for one case study.
1. Two-Bit Drilling Company holds information about employees and their insurance dependents. Every employee has an employee number, name, date of hire, and title. If an employee is an inspector, then the date of certification and the renewal date for that certification should also be recorded in the system. For all employees, the Social Security number and dependent names should be kept. All dependents must be connected with one and only one employee. Some employees will not have dependents, while others will have many dependents.
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- Luxury-Oriented Scenic Tours (LOST) provides guided tours to groups of visitors to the Washington, D.C. area. In recent years, LOST has grown quickly and is having difficulty keeping up with all of the various information needs of the company. The company's operations are as follows: LOST offers many different tours. For each tour, the tour name, approximate length (in hours), and fee charged is needed. Guides are identified by an employee ID, but the system should also record a guide's name, home address, and date of hire. Guides take a test to be qualified to lead specific tours. It is important to know which guides are qualified to lead which tours and the date that they completed the qualification test for each tour. A guide may be qualified to lead many different tours. A tour can have many different qualified guides. New guides may or may not be qualified to lead any tours, just as a new tour may or may not have any qualified guides. Every tour must be designed to visit at least…1. Part 1 Below is the description of a Clothes Information Store (CIS) System. Customers are identified by a customer ID. Customer names, addresses, and ages must be recorded. Brands are identified by a brand ID. For each brand, the brand name, country of origin, and year of establishment must be recorded. ● ● ● ● ● ● ● Each clothing item has a unique clothing item ID. Each clothing item has a name, description, and price. Each brand has at least one clothing item. Each clothing item has only one brand. Each brand produces multiple clothing items. Customers purchase clothing items. A customer could purchase one or more clothing items, and a clothing item could be purchased by (zero or) one customer. Question: Develop an ER diagram that describes a conceptual model for CIS. 1. Indicate the primary key for each of the entities.1. Rick and Ryan Enterprises is an agency that specializes in representing clients in the fields of sports and entertainment. Given the nature of the business, some employees are given a company car to drive and each company car must be assigned to an employee. Each employee has a unique employee number, plus an address and set of certifications. Not all employees have earned one or more certifications. Company cars are identified by their vehicle ID and also contain a license plate number, make, model, and year. Employees represent clients. Not all employees represent clients while some employees represent many clients. Each client is represented by one and only one employee. Each client has a unique client number. Additional attributes required for each client are name, address, and date of birth. Draw an ER diagram that shows the entity types and the relationship types for Rick and Ryan Enterprises. While you must name each relationship type and define the structural constraints…
- QUESTION 1 An admission charge for Bandar Orchid Wetlands varies according to the age of the customer as in Figure 1. The system will receive the input for the number of persons for each category as in Figure 2. Then, it will calculate and display the total charge (include SST 8%) and the category Figure 3. [Assume all items are required. The process is not involving any decision]. Category (Age) 50 and above 13- 49 7-12 4-0 Charge (RM) 30.00 35.00 25.00 15.00 Below 4 Figure 1: Charges for Visitors Free The Bold items are the input from the user. WELCOME TO BANDAR ORCHID WETLANDS Enter the number of persons for each category Age Over 50 Age 13 - 50 Age 7 - 12 Age 4 - 6 Age Below 4 1 2 Figure 2: The Input Total for Over 50 (1 Fersons): BM 30.00 Total for 13 - 50 (2 Persons): RM 70.00 Total for 7 - 12 (4 Persons): RM 100.00 Total for 4 - 6_(O Persons): RM 0.00 Total for Below 4 (FREE) : RM 0.00 ITEMS RM 200.00 12.00 TOTAL 3ST (6R) SUB-TOTAL = 212.00 THANK YOU.ENJOY YOUR HOLIDAY!! Figure…1. Part 1 Below is the description of a Clothes Information Store (CIS) System. Customers are identified by a customer ID. Customer names, addresses, and ages must be recorded. Brands are identified by a brand ID. For each brand, the brand name, country of origin, and year of establishment must be recorded. ● ● ● Each clothing item has a unique clothing item ID. • Each clothing item has a name, description, and price. ● ● Each brand has at least one clothing item. Each clothing item has only one brand. Each brand produces multiple clothing items. Customers purchase clothing items. A customer could purchase one or more clothing items, and a clothing item could be purchased by (zero or) one customer. Question: Develop an ER diagram that describes a conceptual model for CIS. 1. Indicate the primary key for each of the entities. 2. Include the attributes for the different entities in the ER model. 3. Include the cardinalities of the different relationships.Suppose that you are given the following information for the articles publications: • Each article is published in a Journal only. Article may have their own identification number, name, and any other relevant information. Articles cannot be duplicated and will be only accepted in a Journal. Journal will have their identification number, name, any other relevant information. • Authors may publish one or more articles at a time, but each article must be distinctive and published in the appropriate journal. If necessary, the author may be required to present their work at a specific conference. The details of the conference must also be recorded. A reviewer will examine an article before it is published. Each reviewer is only allowed to review two articles from the same journal. Sketch an Enhanced Entity Relationship Diagram (Chen's Model) based on the scenario above. Include all the relevant entities and you are also encouraged to add any other relevant entities to specify the…
- Exercise 3: school system Each subject is owned by a department and each department is managed by a teacher, called Head of Department (HOD). Each department has a name and a unique code number. Each subject has a name, unique number and credit value. All teachers have a unique ID. A HOD cannot manage more than one department at a time. Also, a HOD does not teach subjects. A subject cannot be taught by more than one teacher. Finally, the system needs to know each student's contact details, including, full ID, address, age and gender, as well as date of enrolment in the subject. name, studentThe database keeps track of three types of persons: employees, alumni, and students. A person can belong to one, two, or all three of these types. Each person has a name, SSN, sex, address, and birth date.Every employee has a salary, and there are three types of employees: faculty, staff, and student assistants. Each employee belongs to exactly one of these types. For eachalumnus, a record of the degree or degrees that he or she earned at the university is kept, including the name of the degree, the year granted, and the major department. Each student has a major department.Each faculty has a rank, whereas each staff member has a staff position. Studentassistants are classified further as either research assistants or teaching assistants, andthe percent of time that they work is recorded in the database. Research assistants have their research project stored, whereas teaching assistants have the current course they work on.Students are further classified as either graduate or…The database keeps track of three types of persons: employees, alumni, and students. A person can belong to one, two, or all three of these types. Each person has a name, SSN, sex, address, and birth date.Every employee has a salary, and there are three types of employees: faculty, staff, and student assistants. Each employee belongs to exactly one of these types. For eachalumnus, a record of the degree or degrees that he or she earned at the university is kept, including the name of the degree, the year granted, and the major department. Each student has a major department.Each faculty has a rank, whereas each staff member has a staff position. Studentassistants are classified further as either research assistants or teaching assistants, andthe percent of time that they work is recorded in the database. Research assistants have their research project stored, whereas teaching assistants have the current course they work on.Students are further classified as either graduate or…
- Use the preamble below to answer QUESTIONS I and QUESTIONS 2 A university SOG is made up of employees who belongs to the various departments and are characterized by their staff ID, first name, last name and date of birth. Also students are part of the university and can also be characterized by student ID, first ame, last name, date of admission. Every employee and student belongs to a particular department which can be characterized by the department ID and the department name. Again all students offer a particular program which can be identified by the program ID and program name and also a course that is offered by the students that can be identified by the course ID and the course name. a. Create SOG University database using SQL Data Definition Language. b. Create two (2) tables in the SOG University database from the schemas in QUESTION Ie using SQL. Data Definition Language. c. List the student ID of all students who do not belong to a department with departmentID7 in the SOG…The database keeps track of three types of persons: employees, alumni, and students. A person can belong to one, two, or all three of these types. Each person has a name, SSN, sex, address, and birth date.Every employee has a salary, and there are three types of employees: faculty, staff, and student assistants. Each employee belongs to exactly one of these types. For eachalumnus, a record of the degree or degrees that he or she earned at the university is kept, including the name of the degree, the year granted, and the major department. Each student has a major department.Each faculty has a rank, whereas each staff member has a staff position. Studentassistants are classified further as either research assistants or teaching assistants, andthe percent of time that they work is recorded in the database. Research assistants have their research project stored, whereas teaching assistants have the current course they work on.Students are further classified as either graduate or…need diagram only Draw an ER diagram for the following scenario: A designer has a store of designer dresses both for male and female. People can buy as well as take dresses on rent from the store. Each dress in the designer's store, is identified by unique ID. A dress in the store can be categorized into various categories Western, Indian, Indo-westem, etc. The designer maintains the name, phone number of people who have taken dresses on rent. The designer also maintains the name, phone number, and address of people who have bought dresses from the store. The designer also collects feedback from the people who have bought or taken dresses on rent from the store. Design the ER diagram by mentioning all the structural constraints. You may also include additional information in addition to the requirements listed.