Q7. (A) Why is local control of data an advantage in a DDBMS? (B) Why is the ability to increase system capacity an advantage in a DDBMS? (C) Why is system availability an advantage in a DDBMS? Q8. (A) How to keep replicated data in a DDBMS? (B) What are the advantages of keeping replicated data in a DDBMS? (C) What are the disadvantages of updating replicated data in a DDBMS? Q9. (A) What is the two-phase commit process in a DDBMS? (B) How does the two-phase commit work? (C) Why is the two-phase commit process necessary in a DDBMS? Q10. (A) What is a fat client? Give an example. (B) What is a thin client? Give an example. (C) Would you welcome both fat clients and thin clients for your server? Why so? Q11. (A) What is scalability? (B) What is a three-tier architecture? (C) What are the advantages of a client/server architecture as compared to a file server? Q12. (A) What is HTTP? (B) What is XML? Why was it being developed? (C) What is a data warehouse? (D) What is a fact table in a data warehouse? (E) What is OLTP? When do we use OLTP at all? (F) What is UML? (G) What is generalization? (H) What is an OODBMS? Is a DDBMS an OODBMS?

Q7. (A) Why is local control of data an advantage in a DDBMS? (B) Why is the ability to increase system capacity an advantage in a DDBMS? (C) Why is system availability an advantage in a DDBMS? Q8. (A) How to keep replicated data in a DDBMS? (B) What are the advantages of keeping replicated data in a DDBMS? (C) What are the disadvantages of updating replicated data in a DDBMS? Q9. (A) What is the two-phase commit process in a DDBMS? (B) How does the two-phase commit work? (C) Why is the two phase commit process necessary in a DDBMS? Q10. (A) What is a fat client? Give an example. (B) What is a thin client? Give an example. (C) Would you welcome both fat clients and thin clients for your server? Why so? Q11. (A) What is scalability? (B) What is a three-tier architecture? (C) What are the advantages of a client/server architecture as compared to a file server? Q12. (A) What is HTTP? (B) What is XML? Why was it being developed? (C) What is a data warehouse? (D) What is a fact table in a data warehouse? (E) What is OLTP? When do we use OLTP at all? (F) What is UML? (G) What is generalization? (H) What is an OODBMS? Is a DDBMS an OODBMS