Q. 1. One of the drawbacks of using file systems to store data is data redundancy which leads to the inconsistency problem.

Explain in your own words, why this issue was considered as a drawback? Support your answer with an example and how they solved this problem later.

Q. 2. What are the principles of relational database model? What is the difference between RDBMS and DBMS? Which one is more suitable in modern database applications? Justify with your answer.

Q. 3. Discuss the differences between plsql and mysql?

Explain in your own words, please provide some examples.