Describe a primary key, candidate key, secondary key, foreign key, and a combination key. Provide an example for each.

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A: Dear learner, hope you are doing well, I will try my best to answer this question. Thank You!!

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Normalization

Normalization is the process of eliminating redundancy in a database by organizing the data into several smaller tables. The large tables are normalized (converted) into smaller tables by using normalization rules, so that a database administrator can easily handle them. It also eliminates insertion, deletion, and update anomalies.