Modern Database Management
13th Edition
ISBN: 9780134773650
Author: Hoffer
Publisher: PEARSON
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Textbook Question
Chapter 3, Problem 3.28PAE
Refer to your answer to Problem and Exercise 3-24 Develop entity clusters for this E-R diagram and redraw the diagram using the entity clusters. Explain why you chose the entity clusters you used.
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DRAWING E/R DIAGRAM AND
RELATIONAL SCHEMA
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
Modify the Er diagram given below and add 5 to 6 more additions to it such as entities attributes relationships etc
Chapter 3 Solutions
Modern Database Management
Ch. 3 - Define each of the following terms: supertype...Ch. 3 - Match the following terms and definitions:...Ch. 3 - Contrast the following terms: supertype; subtype...Ch. 3 - State two conditions that indicate when a database...Ch. 3 - Prob. 3.5RQCh. 3 - Give an example (other than those discussed in the...Ch. 3 - What is the attribute inheritance? Why is it...Ch. 3 - Give an example of each of the following: a...Ch. 3 - What types of business rules are normally captured...Ch. 3 - What is the purpose of a subtype discriminator?
Ch. 3 - Prob. 3.11RQCh. 3 - In what ways is starting a data modeling project...Ch. 3 - Prob. 3.13RQCh. 3 - Prob. 3.14RQCh. 3 - What do you purchase when you acquire a packaged...Ch. 3 - In Figure 3-5b, why must the minimum cardinality...Ch. 3 - When is a member of a supertype always a member of...Ch. 3 - Examine the hierarchy for the university EER...Ch. 3 - Add a subtype discriminator for each of the...Ch. 3 - For simplicity, subtype discriminators were left...Ch. 3 - Refer to the employee EER diagram in Figure 3-2....Ch. 3 - Refer to the EER diagram for patients in Figure...Ch. 3 - Figure 3-13 shows the development Of entity...Ch. 3 - Refer to Problem and Exercise 2-44 in Chapter 2...Ch. 3 - For a library, the entity type HOLDING has four...Ch. 3 - A bank has three types of accounts: checking,...Ch. 3 - Refer to your answer to Problem and Exercise 2-4...Ch. 3 - Refer to your answer to Problem and Exercise 3-24...Ch. 3 - Prob. 3.29PAECh. 3 - Draw an EER diagram for the following situation:...Ch. 3 - Develop an EER model for the following situation,...Ch. 3 - Prob. 3.32PAECh. 3 - Prob. 3.33PAECh. 3 - Prob. 3.34PAECh. 3 - Based on the EER diagram constructed for Problem...Ch. 3 - Prob. 3.36PAECh. 3 - Prob. 3.37PAECh. 3 - Add the following to Figure 3-16: An EMPLOYMENT...
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- Problems 1 and 3 on pages 234 - 236 of the course textbook. You must use Draw.IO or MS Visio to complete this case study.Create an ER diagram Explain all normalization issues that exist in the ER Diagram. I want the ER Diagram before normalization and after normalization. Explain all normalization problems that you corrected between the first and second ER diagram. Normalize the data in the ER Diagram to 3NF See the video for a demonstration on how to do this: https://www.youtube.com/watch?v=Nq91b4TQ29Q Create a dependency diagram using the information from your ER diagram. See the video for a demonstration on how to do this: https://www.youtube.com/watch?v=wFOJnRxqrp8 You must label all determinants and dependencies. Note: You must convert your DrawIO files to .jpg, gif or bmp images before you upload the assignment to Canvas. Copy and paste all diagrams into an MS Word document. Please make sure that you enlarge all diagrams so they can be easily…arrow_forwardConversion of E-R diagram to relational schemaSchema is a correct translation of the E-R diagram submitted with appropriate tables, columns, primary keys, and foreign keys.arrow_forwardDescribe how the relationship (M:N) of an E-R diagram is transformed into relationsarrow_forward
- Create a relational schema for this diagramarrow_forwardEntity Relationship Diagram Can you make changes because I think I made some mistakes while working on these entitties and implement the relationships of this ERD? (see attached photo)arrow_forwardDescribe how the relationship (1:M) of an E-R diagram is transformed into relationsarrow_forward
- Create an ER model related to the following entities and relationships: Department, Student, Professor, Course, Section, Grade, Major. (For attributes inside each table, you only need to insert several reasonable attributes. No need to have a comprehensive list. For many-to-many relationship, you also need to insert one extra table to handle the many-to-many relationship. The final database design will have more tables than the number of entities listed above.) A given department can offer many courses. A given course can be offered by only one related department. A given course can have many related sections. A given professor can teach many sections. A given section can only be related to one course and taught by one professor. A given professor can have appointment with different departments A given department can have many professors. A given department can offer several majors. A given major can be offered by only one related department. A given student can have several majors. A…arrow_forwardIn your group, you will need to create an entity relation (E-R) diagram using the Crow's foot symbols that models the problem. This will include: Summarise the ERM's components, and names the entities and their relationship (As given in the Textbook, p.143, Table 4.4) all entities, relationships (including names) and attributes that are relevant, primary keys identified, and include relationship participation - participation (optional / mandatory) symbols and cardinality. The E-R diagram should be completed using the standards of this unit. Use Microsoft Visio to create the E-R diagramarrow_forwardPlease provide a list and illustrative example for the three forms of binary relationships that are not covered in this book. Draw a regular E-R diagram as well as an IE Crow's Foot E-R diagram for each of the three cases studied here.arrow_forward
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Enhanced Entity Relationship Model; Author: Data Science Center;https://www.youtube.com/watch?v=ocQUtXPumdQ;License: Standard YouTube License, CC-BY