Q1. Describe the main characteristics of the database approach and how it is distinct from traditional file system.
Q2. Describe the main categories of the data models.
Q3. Can an identifying relationship of the weak entity type be of a degree more than two? Illustrate.
Q4. Illustrate the difference between logical data independence and physical data independence? Which one is harder to accomplish? describe why?
Q5. In brief describe the various types of update operations on a relation.
Q6. Weak entities don’t have their own key attributes. Validate the statement.
Q7. Describe ACID properties of transactions.