(See related pages)
This chapter extends your knowledge of data modeling from the notation of entity relationship diagrams (ERDs) to the development of data models for business databases along with rules to convert entity relationship diagrams to relational tables. After this chapter, the student should have acquired the following knowledge and skills:
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Develop ERDs that are consistent with narrative problems. |
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Use transformations to generate alternative ERDs. |
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Document design decisions implicit in an ERD. |
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Analyze an ERD for common design errors. |
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Convert an ERD to a table design using conversion rules. |