Modern Database Management
13th Edition
ISBN: 9780134773650
Author: Hoffer
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 2, Problem 2.48PAE
Program Plan Intro
To draw an ERD for the given situation of Stillwater Antiques.
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
MAKE AN ER DIAGRAM FOR THE FOLLOWING PROMPT:
Various physicians are working for a clinic and these doctors are identified by their respective employee numbers. The other descriptors of a doctor are: name, gender, address, and phone. Each physician’s specialty and rank are captured. Every physician serves as a primary care physician for at least one patient; however, no more than 20 patients are allotted to a physician. Every patient is assigned one physician for primary care. Data for patients include: patient number (the unique identifier of a patient), name, gender, date of birth, blood type and the code and name of allergies, if any. Physicians may prescribe medications to patients; thus, it is necessary to capture which physician(s) prescribe(s)s what medication(s) to which patient(s) along with dosage and frequency. In addition, no two physicians can prescribe the same medication to the same patient. If a physician leaves the clinic, all prescriptions written by that physician…
Entity-Relationship Diagram (ERD) is one of the data modeling tools that provides
a software engineer with the ability to represent data objects, their characteristics,
and their relationships. Use an ERD to describe the following scenario.
A teacher is identified by an ID number (TID), last name (LName), and first
name (FName).
A project is identified by a project ID (PID) and title (T).
A student is identified by an ID number (SID), last name (LName), and first
name (FName).
A teacher can supervise zero, one, or many students and a student is supervised
by one teacher.
A teacher must propose one or many projects and every project is proposed by
one teacher.
A student must work on one project and every project is worked by only one
student.
Problem 5:
Draw an entity-relationship diagram for the following situation: Many students play many different sports. One person, called the head coach, assumes the role of coaching all these sports. Each of the entities has a number and a name. (Make any assumptions necessary to complete a reasonable diagram. List your assumptions.)
The entity-relationship diagram you drew in Problem 5 represents the data entities that are needed to implement a system for tracking students and the sports that they play. List the tables that are needed to implement the system, along with primary, secondary, and foreign keys that are required to link the tables.
Chapter 2 Solutions
Modern Database Management
Ch. 2 - Define each of the following terms: entity type...Ch. 2 - Match the following terms and definitions....Ch. 2 - Contrast the following terms: stored attribute;...Ch. 2 - Prob. 2.4RQCh. 2 - Prob. 2.5RQCh. 2 - Prob. 2.6RQCh. 2 - State six general guidelines for naming data...Ch. 2 - Prob. 2.8RQCh. 2 - Prob. 2.9RQCh. 2 - State three conditions that suggest the designer...
Ch. 2 - List the four types of cardinality constraints,...Ch. 2 - Give an example, Other than those described in...Ch. 2 - What is the degree of a relationship? List the...Ch. 2 - Give an example (Other than those described in...Ch. 2 - Give an example of each of the following, other...Ch. 2 - Give an example of the use of effective (or...Ch. 2 - State a rule that says when to extract an...Ch. 2 - Prob. 2.18RQCh. 2 - In addition to explaining what action is being...Ch. 2 - For the Manages relationship in Figure 2-12a,...Ch. 2 - Explain the distinction between entity type and...Ch. 2 - Why is it recommended that every ternary...Ch. 2 - A cellular operator needs a database to keep track...Ch. 2 - Prob. 2.24PAECh. 2 - Answer the following questions concerning Figure...Ch. 2 - Prob. 2.26PAECh. 2 - You may have been assigned a CASE or a drawing...Ch. 2 - Consider the two E-R diagrams in Figure 2-25 Q,...Ch. 2 - Prob. 2.29PAECh. 2 - Are associative entities also weak entities? Why...Ch. 2 - Because Visio does not explicitly show associative...Ch. 2 - Figure 2-26 shows a grade report that is mailed to...Ch. 2 - Prob. 2.33PAECh. 2 - The Is Married To relationship in Figure 2-12a...Ch. 2 - Figure 2-27 represents a situation of students who...Ch. 2 - Figure 2-28 shows two diagrams (A and B), both of...Ch. 2 - Prob. 2.37PAECh. 2 - Review Figure 2-8LQ and Figure 2-22. Identify any...Ch. 2 - Prob. 2.39PAECh. 2 - Prob. 2.40PAECh. 2 - Prob. 2.41PAECh. 2 - Prob. 2.42PAECh. 2 - Prob. 2.43PAECh. 2 - Prob. 2.44PAECh. 2 - Prob. 2.45PAECh. 2 - Prob. 2.46PAECh. 2 - Prob. 2.47PAECh. 2 - Prob. 2.48PAECh. 2 - Draw an ERD for the following situation. (State...Ch. 2 - Prob. 2.50PAECh. 2 - Prob. 2.51PAECh. 2 - Review your answer to Problem and Exercise 2-49 if...
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
- 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.arrow_forwardStudy the following. A customer can place one or more orders, but an order belongs to only one customer. A customer is described by its name, delivery address, and contact number. While an order is described by order number, order status, and order date. Only one payment is made for an order. An order can be paid for through one of two options. A payment is either cash or debit. A payment has an amount attribute. Cash payment is described by cash tendered, while debit payment is described by number, type, and expiry date 6.1 Use the scenario to draw a UML class diagram.arrow_forwardThe following uependency diagram indicates that a patient can receive many prescriptions for one or more medicines over time. Based on this diagram, draw an ERD whose tables are in at least second normal form (2NF). MedName PatientID Date RefillsAllowed PatientName Dosage Shelf Life To keep track of equipment in a certain university, the following table of information is kept: item_id item_label room_numberbldg_code bldg_name bldg_manager 22123 HP Printer 22133 HP Monitor 22134 HP Monitor 10120 CCIT 10120 CCIT 10245 CCIT 12230 CMB 12230 CMB College of Computing and IT Ali Mohammed College of Computing and IT Ali Mohammed College of Computing and IT Ali Mohammed College of Business Management Seif Willis College of Business Management Seif Willis 33212 HP Printer 23312 HP Printer 1. Draw a dependency diagram of the information found in the table. You can use draw.io and copy/paste the image into your submitted document. 2. Normalize the table into 2NF and write the relational schema. 3.…arrow_forward
- Prepare an E-R diagram for a Aqarat (real estate) Company that lists property for sale. The following describes this organization: The company has a several number of offices. Attributes of office include Office_Number (identifier) and Location. Each office is assigned one or more employees. Attributes of employee include Employee_ID (identifier) and Employee_Name. An employee must be assigned to only one sales office. For each office, there is always one employee assigned to manage that office. An employee may manage only the office to which she is assigned. The company lists property for sale. Attributes of property include Property_ID (identifier) and Location. Components of Location include Address, City, State, and Zip_Code. Each unit of property must be listed with one (and only one) of the offices. A office may have any number of properties listed, or may have no properties listed. Each unit of property has one or more owners. Attributes of owners are Owner ID (identifier) and…arrow_forwardCreate an ER model to represent the data used by the library.The library provides books to borrowers. Each book is described by title, edition, and year of publication, and is uniquely identified using the ISBN. Each borrower is described by his or her name and address and is uniquely identified using a borrower number. The library provides one or more copies of each book and each copy is uniquely identified using a copy number, status indicating if the book is available for loan, and the allowable loan period for a given copy. A borrower may loan one or many books, and the date each book is loaned out and is returned is recorded. Loan number uniquely identifies each book loan.arrow_forwardCreate 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)arrow_forward
- A company makes items. Each item has a name, ID and component quantity. Every item contains many components. Each component can be supplied by one or more suppliers. Suppliers have names and IDS. Each component has ID, name, description, suppliers who supply them, and items in which they are used. Not all suppliers provide components, and a component is not always associated with a supplier. Also, a component always have to be associated with one or more items. Finally, the company contact customers using their IDs, Names and Phones to sell them items. A customer can buy one or more items.arrow_forwardWhen building a data model, why is it sometimes preferable to leave out certain information?arrow_forwardCreate an ER diagram that correctly describes the database for exams at Campus in Bäcksvängen in accordance with the following description: (Own assumptions must be clearly described.) Staff for various functions are involved in the exams. All staff have a full name and a unique staff code. Some people are examiners on one or more courses. A course has one name and one unique ladok code. For a course, you can add up its points based on the associated elements. One part is part of a course (for example an exam, a laboratory or project). A course can have several different parts. An element has a name, a description, a torque code, one point and two or more grades (eg: U, G, VG). An element can only belong to one course. Since the database is to process the exams, it is obvious that a part like described as an examination has an examination opportunity that is identified, among other things, by the date, start time, end time and that it is possible to calculate total writing time. A…arrow_forward
- A college course may have one or more scheduled sections or may not have a scheduled section. Attributes of COURSE include Course ID, Course Name, and Units. Attributes of SECTION include Section Number and Semester ID. Semester ID is composed of two parts: Semester and Year. Section Number is an integer (such as 1 or 2) that distinguishes one section from another for the same course but does not uniquely identify a section. How did you model SECTION? Why did you choose this way versus alternative ways to model SECTION?arrow_forwardWhat is the difference between a recurring group and an attribute that may take on many values?arrow_forwardGiven the following ERD. ID name salary Instructor Grades teaches ID name salary Student 1) What is the descriptive attribute of the relationship between instructor and student? 2) Is this relationship a one-to-one, a one-to-many, or a many-to-many relationship?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Principles of Information Systems (MindTap Course...Computer ScienceISBN:9781285867168Author:Ralph Stair, George ReynoldsPublisher:Cengage Learning
Principles of Information Systems (MindTap Course...
Computer Science
ISBN:9781285867168
Author:Ralph Stair, George Reynolds
Publisher:Cengage Learning