August 2009
Intermediate to advanced
893 pages
26h 48m
English
Content preview from Database Systems: Concepts, Design and Applications
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Review Questions
| 1. | What are the disadvantages or limitations of an E-R Model? What led to the development of EER model? |
| 2. | What do you mean by superclass and subclass entity types? What are the differences between them? Explain with an example. |
| 3. | Using a semantic net diagram, explain the concept of superclasses and subclasses. |
| 4. | With an example, explain the notations used for EER diagram while designing database for an enterprise. |
| 5. | What do you mean by attribute enheritance? Why do we use it in EER diagram? Explain with an example. |
| 6. | Differentiate between a shared subtype and a multiple enheritance. |
| 7. | What are the conditions that must be considered while deciding on supertype/subtype relationship? Explain with an example. |
| 8. | What are the advantages ... |
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.