Q2. (A) What is a centralized database? (B) What different design decisions would you make to access data rapidly in a centralized database compared to a distributed database? (C) What are the advantages and disadvantages of using a centralized database? Q3. (A) What is a homogeneous DDBMS? (B) Hw does a homogeneous DDBMS differ from a heterogeneous DDBMS? (C) Which one is more complex? Why? Q4. (A) What is location transparency? (B) What is replication transparency? (C) Does location transparency imply replication transparency, or vice versa? Q5. (A) What is replication? (B) Why is it being used in DDBMS? (C) What are the advantages and disadvantages of using replication in DDBMS? Q6. (A) What is data fragmentation? (B) What is its purpose or advantage? Is there any disadvantage at all? (C) What is fragmentation transparency? Why is it so important