Modern Database Management
13th Edition
ISBN: 9780134773650
Author: Hoffer
Publisher: PEARSON
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Chapter 3, Problem 3.15RQ
What do you purchase when you acquire a packaged data model?
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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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- Learn to distinguish between data definition commands, data manipulation commands, and data control commands and utilize them effectively.arrow_forwardWhat are the most important differences between a data item and a data attribute that can be drawn in the context of the data hierarchy? When an attribute is declared to have scope, what does it imply exactly?arrow_forwardYour definition of "data abstraction"? How is a dataset divided?arrow_forward
- How do you handle temporal data modeling, including valid time and transaction time?arrow_forwardWhat connotations come to mind when you hear the term "data abstraction"? How can a dataset be divided into its constituent elements using the numerous available techniques?arrow_forwardWhat do you think is meant by the term "data abstraction"? How can you divide up a data set?arrow_forward
- Outline the advantages of using a pre-packaged data model instead of scratching your head in frustration over how to begin your data modeling project.arrow_forwardWhat does the term "data abstraction" mean to you? How can you break down a dataset?arrow_forwardHow can data dictionaries support efforts in data deduplication and normalization?arrow_forward
- How many levels of data abstraction are optimum?arrow_forwardCan you recognise the difference between data definition commands, data manipulation commands, and data control commands, as well as when to utilise each?arrow_forwardWhat is the purpose for not include a data object in a data model?arrow_forward
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