Q1. Describe the difference between the logical and physical data independence.
Q2. What do you mean by data model? List all the types of data models.
Q3. What do you mean by dangling tuples? Illustrate the problems which might arise because of them?
Q4. In multiple-granularity locking, illustrate the difference between the implicit and explicit locking?
Q5. Define the term OLAP? Illustrate what is it mainly used for?
Q6. Among all the SQL statements DROP TABLE and DELETE, which is DML and which is DDL? As well illustrate the difference in the working of such statements?