What is a foreign key? Why are foreign keys used or required in a relational database? Are duplicate foreign key values allowed? Why or why not?
Answer to relevant QuestionsDescribe the steps used to transform an ERD into a relational database schema.Describe the process of relational database normalization. Which normal forms rely on the definition of functional dependency?Describe the two ways in which a generalization relationship can be represented in an object database.The Universal Product Code (UPC) is a bar-coded number that uniquely identifies many products sold in the United States. For example, all copies of this textbook sold in the United States have the same UPC bar code on the ...1. Develop a relational database schema in 3NF.2. Develop an ODL database schema.Refer to the description of the Real Estate Multiple Listing Service system in the Chapter 5 case studies. Using the ERD and domain model class ...
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