Modern Database Management
13th Edition
ISBN: 9780134773650
Author: Hoffer
Publisher: PEARSON
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Textbook Question
Chapter 3, Problem 3.22PAE
Refer to the EER diagram for patients in Figure 3-3. Make any assumptions you believe are necessary. Develop sample definitions for each entity type, attribute, and relationship in the diagram.
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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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- Data modelling is most often accomplished through the use of a(an) ________________. a. entity-relationship diagram b. data-flow diagram c. functional decomposition diagram d. activity diagramarrow_forwardPlease provide a definition of an entity-relationship model as well as an explanation of how it works.arrow_forwardIn the Entity-Relationship (ER) model, list the many types of attributes.arrow_forward
- What is the attribute that could be obtained using other attributes in the Entity-Relationship Diagram? Select one: a.Multi-Valued Attribute b.Derived / Calculates Attribute c.Single-Valued Attribute d.Composite Attributearrow_forwardWhat is the definition of "weak entity type"? Does it have a secret? Can you elucidate what "attribute" means?How would sia appear on an ER chart? Please depict with a diagram.arrow_forwardGiven the ER diagram to the right, which entity types deserve to stay entity types and which ones should be converted to attribute? Explain why.arrow_forward
- Provide an Entity-Relationship Model for a motor sport fan, based onthe description in Table 1 on the next page.Present the model in the form of an Entity-Relationship diagram inChen notation. Make sure to identify special attributes (includingkeys) in the diagram and include participation and cardinality con-straint annotations for your relationships.arrow_forwardHow does an entity-relationship diagram work and what precisely is it?arrow_forwardMake a UML diagram, Entity Relationship Model with the following data from the tablearrow_forward
- Please hand draw the ER diagram with all attributes and entities not this chatgot generated one.arrow_forwardDescribe the Entity-Relationship model and its function.arrow_forwardDescribe how functional dependencies may be used to show: • There is a many-to-one connection set between the entity sets student and instructor, as well as a one-to-one relationship set between the two.arrow_forward
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