Modern Database Management
13th Edition
ISBN: 9780134773650
Author: Hoffer
Publisher: PEARSON
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Chapter 4, Problem 4.31PAE
For your answers to the following Problems and Exercises from prior chapters, transform the EER diagrams into a set of relational schemas, diagram the functional dependencies, and convert all the relations to third normal form:
- Chapter 2, Problem and Exercise 2-39b
- Chapter 2, Problem and Exercise 2-39g
- Chapter 2, Problem and Exercise 2-39h
- Chapter 2, Problem and Exercise 2-39i
- Chapter 2, Problem and Exercise 2-42
- Chapter 2, Problem and Exercise 2-46
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Answer D and E only
** ERD attached (the second picture)
** Relational model:
c) Entity Relationship to Relational Model:
To convert the given diagram to a relational model, below are the steps:
Create Relations from Diagram:
The relations in the model are as below:
1. Subscriber: (SubscriberID, Name, Address, Email, Phone)
2. SubscriptionTypes(TypeCode, Name, Description, DuartionDays)
3. Subscriptions(SubscriptionID, Price, StartDate, EndDate)
Solve the relationships by adding referential integration:
1) Subscription will have one Subscriber: Thus add a new foreign key SubscriberID
2) Subscription will have one SubscriptionType, thus add a new foreign key TypeCode.
FINAL RELATIONAL MODEL
1. Subscriber: (SubscriberID, Name, Address, Email, Phone)
Primary key: SubscriberID
Foreign key: NA
2. SubscriptionTypes(TypeCode, Name, Description, DuartionDays)
Primary key: TypeCode (Either D or S)
Foreign key: NA
3. Subscriptions(SubscriptionID, Price, StartDate, EndDate,…
i need the answer quickly
The following are the objectives for the design of the logical schema:
Chapter 4 Solutions
Modern Database Management
Ch. 4 - Define each of the following terms: determinant...Ch. 4 - Prob. 4.2RQCh. 4 - Prob. 4.3RQCh. 4 - Describe the primary differences between the...Ch. 4 - Summarize six important properties of relations.Ch. 4 - Describe two properties that each candidate key...Ch. 4 - Describe the three types of anomalies that can...Ch. 4 - Demonstrate each of the anomaly types with an...Ch. 4 - Fill in the blanks in each of the following...Ch. 4 - What is a well-structured relation? Why are...
Ch. 4 - Prob. 4.11RQCh. 4 - Describe how the following components of an E-R...Ch. 4 - Prob. 4.13RQCh. 4 - Prob. 4.14RQCh. 4 - Briefly describe four typical problems that often...Ch. 4 - Prob. 4.16RQCh. 4 - Explain how each of the following types of...Ch. 4 - Prob. 4.18RQCh. 4 - Prob. 4.19RQCh. 4 - Prob. 4.20RQCh. 4 - Prob. 4.21RQCh. 4 - What is the relationship between the primary key...Ch. 4 - Prob. 4.23RQCh. 4 - Explain what can be done with primary keys to...Ch. 4 - Prob. 4.25RQCh. 4 - Explain three conditions that suggest a surrogate...Ch. 4 - Prob. 4.27RQCh. 4 - For each of the following E-R diagrams from...Ch. 4 - Prob. 4.29PAECh. 4 - Prob. 4.30PAECh. 4 - For your answers to the following Problems and...Ch. 4 - Figure 4-3212 shows a class list for Millennium...Ch. 4 - Prob. 4.33PAECh. 4 - Prob. 4.34PAECh. 4 - Prob. 4.35PAECh. 4 - Prob. 4.36PAECh. 4 - Prob. 4.37PAECh. 4 - Prob. 4.38PAECh. 4 - Prob. 4.39PAECh. 4 - Transform Figure 2-15a, attribute version, to 3NF...Ch. 4 - The Public Safety office at Millennium College...Ch. 4 - Prob. 4.42PAECh. 4 - Prob. 4.43PAECh. 4 - Prob. 4.44PAECh. 4 - For your answers to Problem and Exercise 3-33 from...Ch. 4 - Prob. 4.46PAECh. 4 - Prob. 4.47PAECh. 4 - Figure 4-38 includes an EER diagram for a...Ch. 4 - Prob. 4.49PAECh. 4 - Prob. 4.50PAECh. 4 - Prob. 4.51PAECh. 4 - Prob. 4.52PAECh. 4 - Figure 4-40 shows an EER diagram for a university...Ch. 4 - Explore the data included in Table 4-9. Assume...Ch. 4 - Prob. 4.55PAECh. 4 - Prob. 4.56PAECh. 4 - Prob. 4.57PAECh. 4 - Prob. 4.58PAE
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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
- Lab 3: Normalization Assignment: Problem #11 from Chapter #6. (Be sure to note that this is PROBLEM and not REVIEW QUESTION). Normalize a set of data to 1st, 2nd and 3rd normal form by creating relational schemas, dependency diagrams and an Entity Relationship Diagram (crow’s foot notation). For this lab, complete problem #11 in Chapter 6. Be sure to complete each letter (a thru c) for the problem. The ERD for letter cmust be completed with the use of Microsoft Visio. Remember to include headers on all documents you submit to include a brief descriptive title, your name and a date. Question 11: Given the sample records in the CHARTER table shown in Table P6.11, do the following: Write the relational schema and draw the dependency diagram for the table structure. Make sure that you label all dependencies. CHAR_PAX indicates the number of passengers carried. The CHAR_MILES entry is based on round-trip miles, including pickup points. (Hint: Look at the data values to determine the…arrow_forwardTable 4-8 shows a portion of a shipment table for a large manufacturing company. Each shipment (identified by Shipment#) uniquely identifies the shipment Origin, Destination, and Distance. The shipment Origin and Destination pair also uniquely identifies the Distance. Question: a. Develop a diagram that shows the functional dependencies in the SHIPMENT relation. b. In what normal form is SHIPMENT? Why? c. Convert SHIPMENT to third normal form if necessary. Show the resulting table(s) with the sample data presented in SHIPMENT.arrow_forwardWant 3NF relations for the above EER Model in the hand written format below of an unrelated example:arrow_forward
- I NEED ONLY ENTITY RELATIONSHIP & RELATIONAL DIAGRAM.arrow_forwardInstructions: Create a complete ERD in Crow's Foot notation that can be implemented in the relational model using the descriptions below. The attributes required: Activity's ID, Activity's Title, Activity's description, Child's ID, Child's firstname and lastname, Child's Birthday, Parent's ID, Parent's number, Parent's address. The business rules are: An activity may or may not have a child signed up An activity may have many children signed up A child must have an activity A child may have many activities A child must have a parent A parent must have a child A child may have many parents A parent may have many children To submit: Write your answer in a clean sheet of paper and upload a picture of it to dropboxarrow_forwardTransform the diagram to a relational schema that shows referential integrity constraintsarrow_forward
- Swing Jazz Club ERD Problem Follow the Simple Procedure for ERD diagramming to design an ERD using the following user provided information. Remember the ERD will eventually turn into the design for a database from a top down view. Make sure you resolve any many to many conflicts. Label an identifier or primary key and all pertinent attributes given. If an attribute is not readily apparent from the user information, then make one up that makes sense for the particular entity. Therefore, all entities should end up with at least an identifier and another attribute that makes sense. You may use any of the approaches shown by the book, though the ER-Model and Crow’s foot are the most common. Make sure you show entities, relationships, cardinality, and optionality. Swing Jazz Club The Swing Jazz Club teaches swing and jazz dancing and offers both private and group lessons. Swing Jazz charges $60 dollars per hour for a private lesson and $10 dollars per hour for a group lesson.…arrow_forwarda) Complete the object conceptual data model for the following relational schema. Branch BranchID Location B001 Shatin ВО02 Homantin Order OrderID SalesTotal BranchID 0001 100 BO01 0002 200 BO02 0003 300 BO01 BranchID is the primary key of Branch table. OrderID is the primary key of Order table. BranchID in Order table is the foreign key references Branch table. Now, assume the OIDS are given below: Branch BranchID Location OID B001 Shatin OID1 B002 Homantin OID2 Order OrderID SalesTotal BranchID OID 0001 100 ВО01 OID3 0002 200 ВО02 OID4 0003 300 ВО01 OID5arrow_forwardLet R(a, b, c), S(a, b, c), and T(a, b, c) be three relations. Write one or more Datalog rules that define the result of each of the following expressions of relational algebra. (a) (RUS) – T (b) (R – S)n (R – T)arrow_forward
- Let R(a,b,c), S(a,b,c), and T(a,b,c) be three relations.Write one or more Datalog rules that define the result of each of the followingexpressions of relational algebra: d) (R U S)- T f) πa,b (R)arrow_forwardExplain how functional dependencies can be used to indicate the following: • A one-to-one relationship set exists between entity sets student and instructor. • A many-to-one relationship set exists between entity setsstudent and instructor.arrow_forwardThe text states that you can argue that “the only reason for having relations is to store instances of functional dependencies.” Explain, in your own words, what this meansarrow_forward
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