What is a DBMS? Briefly describe the components of a DBMS.

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What is a DBMS? Briefly describe the components of a DBMS.  Describe a primary key, candidate key, secondary key, foreign key, and a combination key. Use your imagination to provide an example of each key that is not in the textbook.  What are entity-relationship diagrams and how are they used? What symbol is used for a relationship? What is an associative entity? Provide an example. Note: For the purpose of this assignment, you may use an ERD not related to this specific case study

 

 
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