Modern Database Management (12th Edition)
12th Edition
ISBN: 9780133544619
Author: Jeffrey A. Hoffer, Ramesh Venkataraman, Heikki Topi
Publisher: PEARSON
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Question
Chapter 4, Problem 4.49PAE
Program Plan Intro
Identify normal forms of given relations and convert relations into an EER diagram in case they are in 3NF.
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Students have asked these similar questions
Convert the ER diagram to relations in the normal manner to capture as many constraints as possible, and then identify which of the answers is a relation schema.
A. Dependents(ID, name, bDate)
B. Employees(ID, name, street, city, state, phones, sDate, lengthEmp)
C. Coverage(ID, name)
D. Employees(ID, name, street, city, state, sDate, lengthEmp)
This is a Database course. Please explain how you get the answer and if there is a formula for such kind of questions.
I would love to understand how that question is answered as I have an exam tomorrow.
I guessed the answer as 5 lol but is wrong.
Thank you in advance.
Consider the following E/R diagram with isa relationships, noting that attribute b is the key of R. If we use an
E/R-style approach and convert this diagram into relations, which of the following relations will be among the result?
Select one:
Y(a,c,d)
T(a,b,d)
Z(b,c)
S
X(a,b,c,d)
R
b
Chapter 4 Solutions
Modern Database Management (12th Edition)
Ch. 4 - Prob. 4.1RQCh. 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 - For your answers to the following Problems and...Ch. 4 - Transform Figure 2-15a, attribute version, to 3NF...Ch. 4 - Prob. 4.41PAECh. 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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Similar questions
- Summarize six important properties of relationsarrow_forwardShould the cardinality between entities be translated/read from both ends of the notation when dealing with database entity relationship modeling? To put it another way, can a connection between two things be comprehended by reading it both forward and backward?arrow_forwardThis is a Database course. Please explain how you get the answer and if there is a formula for such kinds of questions. I would love to understand how that question is answered as I have an exam tomorrow. I got 3 as answer but it's wrong. Thank you in advance.arrow_forward
- Translate the E/R diagram that you draw in the previous question into a set of relations, clearly marking all references and keys. Also explain your translation with a paragraph. thats the previous question :Draw an Entity Relationship diagram for modeling the following system. Use relational modelling techniques in your design. You are free to make reasonable assumptions for your model unless they conflict with the definition below. Also explain your design with a paragraph. [Caution: Create your solution using paper and pen. Then put the image of your solution here. Drawing/writing with computer tools will not be accepted. Also include your name and signature in the solution paper]Problem definition: “There is a need to keep track of data for a hospital. The hospital building consists of several departments. Each department is identified with its name. For each department, the following data should also be stored: the number of floors, opening hour, and closing hour. Each…arrow_forwardBuild an entity-relationship diagram, deriving relations and validating relations using normalization up to third normal formarrow_forwardUsing the relations ATTACHED, normalize your relations into first, second, and third normal forms. First, KINDLY describe the changes required to your relations to meet the standard of the first 1NF and then 2NF and lastly 3NF. Then, you should provide an Entity Relationship diagram that is in 3NF. All attributes, entities, keys, and relationships should be included and labelled. Hint: Remember that in the hospital software system, the “Patient” relation includes the “medicines” attribute and the “Appointment” relation includes the “allergies” attribute. Allergies describe a list of any known allergies and medicines describe a list of medicines prescribed for a patient. Please add: Define or describe the changes required to get the relations into the 1st normal form. Define or describe the changes required to get the relations into the 2nd normal form. Include an Entity Relationship diagram in the 3rd normal form. The primary and foreign keys, at a minimum, are defined for each…arrow_forward
- This is a Database course. Please explain how you get the answer and if there is a formula for such kinds of questions. I would love to understand how that question is answered as I have an exam tomorrow. I got 4 as an answer but 4 is not the answer. Thank you in advance.arrow_forwardConvert any E-R diagram in a Relation.arrow_forwardBecause an EER discussion nearly always produces a normalised set of relations, what is the point of normalisation?arrow_forward
- Solve with explanationarrow_forwardConsider the following entity relationship diagram (ERD). where two entities E1 and E2 have a relation R of cardinality 1: m. m E1 E2 The attributes of E1 are A11, A12 and A13 where A11 is the key attribute. The attributes of E2 are A21, A22 and A23 where A21 is the key attribute and A23 is a multi- valued attribute. Relation R does not have any attribute. A relational database containing minimum number of tables with each table satisfying the requirements of the third normal form (3NF is designed from the above ERD. The number of tables in the database is R.arrow_forwardAlso, develop a model of the proposed database systems using the Entity Relationship (E-R) model for the organization showing all relationships. Ensure to label all relationshipsadequately, describing each relationship provided in ER diagram. In addition, write in standard notation one table from your ER diagram utilizing two record. Please to answer those 2 sub-part according to the first set of questions. Can you also give a more detailed info, I need a lot of information. 3 pages if possible, to pick, choose and refuse from.arrow_forward
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