Modern Database Management
13th Edition
ISBN: 9780134773650
Author: Hoffer
Publisher: PEARSON
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Chapter 3, Problem 3.14RQ
Program Plan Intro
Viability of a project data model and the reason.
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Does a data modeling project using a packaged data model require less or greater skill than a project not using a packaged data model? Why or why not?
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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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- The ______________ model is a simple but highly useful way to organize data into collections of two-dimensional tables called relations.arrow_forwardWhat is the difference between starting a data modeling project from scratch and starting with a pre-packaged data model?arrow_forwardWhat is the benefit of data modeling?arrow_forward
- What are the key differences between starting from scratch and adopting a pre-built data model as a starting point for a data modeling project?arrow_forwardWhat are the disadvantages of using a Data Modeling strategy?arrow_forwardWhat are the disadvantages of a Data Modeling-based approach?arrow_forward
- What are the advantages and disadvantages of beginning a data modeling project using a packaged data model vs starting with a blank sheet of paper?arrow_forwardIn what ways is starting a data modeling project with a packaged data model different from starting a data modeling project with a clean sheet of paper?arrow_forwardWhen a commercial solution is utilized, does the data modeling process take on a different appearance or feel?arrow_forward
- What are the pros and cons of beginning a data modelling project using a packaged data model instead of a blank page?arrow_forwardWhat are the advantages and disadvantages of beginning a data modelling project using a packaged data model vs a blank sheet of paper?arrow_forwardWhen compared to beginning a data modeling project with a blank sheet of paper, what are the advantages and disadvantages of employing a pre-packaged data model instead?arrow_forward
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