Difference between natural key and invented key

Assignment Help Basic Computer Science

Reference no: EM133189919

Provide your answers to the following questions:

1. What is a primary key? Are duplicate primary keys allowed? Why or why not?

2. What is the difference between a natural key and an invented key? Which type is most commonly used in business information processing?

3. 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?

Reference no: EM133189919

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