Database Systems: Design, Implementation, & Management
13th Edition
ISBN: 9781337627900
Author: Carlos Coronel, Steven Morris
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Expert Solution & Answer
Chapter 5, Problem 9C
Explanation of Solution
Crow’s Foot ER diagrams for support the need of business:
The following data model shows the solution for the given question.
Explanation:
- In the above data model, the “Person” supertype entity contains “Per_No” as primary key. It contain optional “Author” entity and this entity contain “Per_No” is the primary and foreign key.
- The person has much expertise to work on the particular research and the “Expertise” has “Per_No” and “Int_code” are the primary and foreign keys.
- The “Interest” entity contains “Int_code” as primary key...
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
There are many dietitians in the center. There are also many clients in the center. A dietitian gives a menu to a client every week. Many diet menus are available. A diet menu consists of many food items and each food items belongs to one food category.
• Identify the relationship between Entities (clearly showing the cardinality and participation)
The question is very clear slove it according to it
Create an Entity/Relationship (ER) diagram to model the following scenario:
An online magazine maintains a list that ranks restaurants based on reviews sent by the magazine's subscribers
each restaurant is uniquely identified by an auto-generated code
other attributes associated with a restaurant include its name, address, price range (1-3), rating (1-5 stars), and cuisine type
there are many cuisine types and more can be added in the future
subscribers are uniquely identified by their email and each have a name
subscribers can review as many restaurants as they want, and a restaurant can be reviewed by many subscribers
a review has a rating (1-5 stars), a date, and comments
the system does not allow more than one review on the same date to the same restaurant and written by the same subscriber
new reviews entered do not become immediately available as the magazine needs to check if the comments are appropriate and do not contain cursing or anything nasty/offensive
once a new review…
ABC is a pharmaceutical company that recruits volunteers for clinical trials on drugscurrently under development at the company. The company conducts multipleclinical trials concurrently. Each clinical trial is assigned a trial code together with description of theclinical trial, start date, end date, and the lead scientist. Each clinical trialinvolves at least one treatment, and each treatment belongs to only one trial.Treatment has its conduct date. When volunteers sign up for a treatment of a clinical trial, their contact detailsincluding full name, address, contact number, email address, as well as theirunique volunteer number are recorded. Each volunteer is involved in at leastone treatment, while each treatment is tested on at least 30 volunteers. In addition, medical details for each volunteer including weight, height, bloodtype, race, gender, and medical condition are also recorded separately. At each treatment each volunteer involves a specific drug of certain type,…
Chapter 5 Solutions
Database Systems: Design, Implementation, & Management
Ch. 5 - Prob. 1RQCh. 5 - What kinds of data would you store in an entity...Ch. 5 - Prob. 3RQCh. 5 - What is a subtype discriminator? Give an example...Ch. 5 - Prob. 5RQCh. 5 - What is a disjoint subtype? Give an example.Ch. 5 - What is the difference between partial...Ch. 5 - Prob. 8RQCh. 5 - According to the data model, is it required that...Ch. 5 - Prob. 10RQ
Ch. 5 - Prob. 11RQCh. 5 - Prob. 12RQCh. 5 - Prob. 13RQCh. 5 - Prob. 14RQCh. 5 - When implementing a 1:1 relationship, where should...Ch. 5 - What is time-variant data, and how would you deal...Ch. 5 - Prob. 17RQCh. 5 - Prob. 1PCh. 5 - Prob. 2PCh. 5 - Prob. 3PCh. 5 - Prob. 4PCh. 5 - Prob. 5PCh. 5 - Prob. 6PCh. 5 - Prob. 7PCh. 5 - Prob. 8CCh. 5 - Prob. 9CCh. 5 - Prob. 10C
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- A new sales ordering system needs a relational database that contains a customer table, a product inventory table, and an order table. Use a word-processing, graphics, or spread-sheet program to draw an entity-relationship diagram showing the relationships among these entities. Next, design each of these tables showing the keys and attributes to be included in each table. Include five sample records for each table.arrow_forwardA new sales ordering system needs a relational database that contains a customer table, a product inventory table, and an order table. Use a word-processing, graphics, or spreadsheet program to draw an entity-relationship diagram showing the relationships among these entities. Next, design each of these tables showing the keys and attributes to be included in each table. Include five sample records for each table.arrow_forwardABC is a pharmaceutical company that recruits volunteers for clinical trials on drugscurrently under development at the company. The company conducts multipleclinical trials concurrently. Each clinical trial is assigned a trial code together with description of theclinical trial, start date, end date, and the lead scientist. Each clinical trialinvolves at least one treatment, and each treatment belongs to only one trial.Treatment has its conduct date. When volunteers sign up for a treatment of a clinical trial, their contact detailsincluding full name, address, contact number, email address, as well as theirunique volunteer number are recorded. Each volunteer is involved in at leastone treatment, while each treatment is tested on at least 30 volunteers. In addition, medical details for each volunteer including weight, height, bloodtype, race, gender, and medical condition are also recorded separately. At each treatment each volunteer involves a specific drug of certain type,…arrow_forward
- pls help me : Draw an ER diagram according to the following requirements:Database to manage daily medical examination and treatment in the hospital (not interested in treating inpatients):- The hospital has many doctors and nurses from different departments. Each doctor and nurse belongs to only one department- The patient when he comes to the doctor will be created a patient record if it is the first visit- Each visit will be made a medical record and assigned an initial clinic. Each visit is attended by a doctor and an assistant nurse.- The doctor may ask the patient to perform tests, x-rays, endoscopy, ....- After the results are available, the patient returns to the original clinic for the doctor to read the results and prescribe medicine if any- Patients can buy medicine in the hospital pharmacy or buy it outsidearrow_forwardA restaurant chain has several locations in a city (with a name and zip code stored for each), and each is managed by one manager. Each manager manages multiple restaurants. Each restaurant location has its own unique set of menus. Most have more than one menu (e.g., lunch and dinner menus). Each menu has many menu items, items can appear on multiple menus, and each menu has a price on it. A customer can visit multiple restaurants and a restaurant can have multiple customers. Represent this situation of restaurants with an E-R diagramarrow_forwardConsider a school system in which data is recorded about the movie industry. The data requirements are summarized as follows: Each subject is owned by a department and each department ismanaged by a teacher, called Head of Department (HOD). Eachdepartment has a name and a unique code number. Each subjecthas a name, unique number and credit value. All teachers have aunique ID. A HOD cannot manage more than one department at atime. Also, a HOD does not teach subjects. A subject cannot betaught by more than one teacher. Finally, the system needs toknow each student’s contact details, including, full name, studentID, address, age and gender, as well as date of enrolment in thesubject. Design an Entity-Relationship diagram for the movie databasearrow_forward
- Draw a use-case diagram and create a set of activity diagrams for the following system. A Video Store (AVS) runs a series of fairly standard video stores. Before a video can be put on the shelf, it must be cataloged and entered into the video database. Every customer must have a valid AVS customer card in order to rent a video. Customers rent videos for three days at a time. Every time a customer rents a video, the system must ensure that they do not have any overdue videos. If so, the overdue videos must be returned and an overdue fee paid before customer can rent more videos. Likewise, if the customer has returned overdue videos, but has not paid the overdue fee, the fee must be paid before new videos can be rented. Every morning, the store manager prints a report that lists overdue videos. If a video is two or more days overdue, the manager calls the customer to remind them to return the video. If a video is returned in damaged condition, the manager removes it from the video…arrow_forwardDraw an ER Diagram for the following Business Situation: A bank has a phone call system in which the costumer can call and talk to one employee and inquire of their existing account. Costumer can have two type of accounts, checking account or savings account, client can own both type of accounts. One of the assumptions which is being made with this project is all interactions will be over the phone. Clients would call in to the business’ account representatives who will have to search the client in internal database. Once the client has been searched in the database, representative will go forth and verify the client via personal information displayed through the database. Personal Information would include, full name, address, last 4 of social security, and account number. The project will assume that the business is domestic, and all clients are in the United States. Once the client is verified, representative can discuss business related queries, including transactional questions…arrow_forwardA company database needs to store information about employees (identified by ssn, with salary and phone as attributes), departments (identified by dno, with dname and budget as attributes), and children of employees (with name and age as attributes). Employees work in departments; each department is managed by an employee; a child must be identified uniquely by name when the parent (who is an employee; assume that only one parent works for the company) is known. We are not interested in information about a child once the parent leaves the company. Draw an ER diagram that captures this information.arrow_forward
- Consider the COMPANY database which keeps track of a company’s employees, departments, and projects:• The company is organized into departments. Each department has a unique name, a unique number and a particular employeethat manages the department.• A department controls a number of projects, each of which has a unique name and unique number.• We store each employee’s name, a national card ID, address, salary, and birth date. An employee is assigned to one department but may work on several projects, which are not controlled by the same department. We keep track of the number of hours per week that the employee works on each project. Aproject may involve more than one employee.• We want to keep track of the dependents of each employee for Insurance purposes. We keep each dependent’s first name, birth date and relationship to the employee.Answer the following questions about the COMPANY database.State clearly any assumptions that you may make.Draw the entity relationship diagram for…arrow_forwardCreate a Use Case Diagram for the below scenario: In The University of Technology Library Systems, whenever a new books arrives to the university that books information will be entered by the inventory officer into the inventory. Library staff will allow the students to borrow the books and also return the books. Students in the university can search the books and reserve that book automatically to borrow. Also there is a Library manager who will have permission to print the books titles delete the book copy information, view overdue or books which are not returned on time and also view who has reserved the books in advance Now draw the use case diagram by identifying actors, use cases etc.arrow_forwardConsider an online auction database system in which members (buyers and sellers) participate in the sale of items. The data requirements for this system are summarized as follows: Members The online site has members who are identified by a unique member id and are described by an email address, their name, a password, their home address, and a phone number. Supertype and Subtypes for Members A member may be a buyer or a seller, but not both (disjoint subtype). A member must be one or the other (mandatory or required participation). A buyer has a shipping address recorded in the database. A seller has a bank account number and routing number recorded in the database. Both buyer and seller subtypes (entities) share the primary key with members which is membered. Items Items are placed by a seller for sale and are identified by a unique item number assigned by the system. Items are also described by an item title, an item description, a starting bid price, bidding increment, the start…arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Fundamentals of Information SystemsComputer ScienceISBN:9781337097536Author:Ralph Stair, George ReynoldsPublisher:Cengage Learning
Principles of Information Systems (MindTap Course...Computer ScienceISBN:9781305971776Author:Ralph Stair, George ReynoldsPublisher:Cengage Learning
Database Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781305627482Author:Carlos Coronel, Steven MorrisPublisher:Cengage Learning
Database Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781285196145Author:Steven, Steven Morris, Carlos Coronel, Carlos, Coronel, Carlos; Morris, Carlos Coronel and Steven Morris, Carlos Coronel; Steven Morris, Steven Morris; Carlos CoronelPublisher:Cengage Learning
Fundamentals of Information Systems
Computer Science
ISBN:9781337097536
Author:Ralph Stair, George Reynolds
Publisher:Cengage Learning
Principles of Information Systems (MindTap Course...
Computer Science
ISBN:9781305971776
Author:Ralph Stair, George Reynolds
Publisher:Cengage Learning
Database Systems: Design, Implementation, & Manag...
Computer Science
ISBN:9781305627482
Author:Carlos Coronel, Steven Morris
Publisher:Cengage Learning
Database Systems: Design, Implementation, & Manag...
Computer Science
ISBN:9781285196145
Author:Steven, Steven Morris, Carlos Coronel, Carlos, Coronel, Carlos; Morris, Carlos Coronel and Steven Morris, Carlos Coronel; Steven Morris, Steven Morris; Carlos Coronel
Publisher:Cengage Learning