Question: Please answer the following questions. Ch 4 - Q6. What is a data dictionary, what does it contain, and how is it used? Ch 4

Please answer the following questions. Ch 4 - Q6. What is a data dictionary, what does it contain, and how is it used? Ch 4 - Q7. Compare and contrast the file-oriented approach and the database approach. Explain the main advantages of database systems

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