Q1. Describe the difference between the database systems and file based systems.
Q2. Describe the difference between a weak and strong entity set.
Q3. Define the term foreign key. Describe its importance?
Q4. Describe the working of GROUP BY clause. Illustrate the difference between the WHERE and HAVING clause in the SQL?
Q5. Describe the role of the Database Administrator.
Q6. Define the term data warehousing and data mining with suitable instances.