12.1 What are the origins of the object-oriented approach?

Database System Wk4

12.7 What is the difference between persistent and transient objects? How is persistence handled in typical OO database systems?

12.21 What is meant by the type orthogonality of OQL?

Chapter 13 #

13.3

What are the differences between the use of tags in XML versus HTML?

13.4.

What is the difference between data-centric and document-centric XML documents?

Chapter 14 #

14.3 Why should NULLs in a relation be avoided as much as possible? Discuss the problem of spurious tuples and how we may prevent it.

Chapter 15 #

15.2 What is meant by the completeness and soundness of Armstrong’s inference rules?

15.7 Why are normal forms alone insufficient as a condition for a good schema design?

"96% of our customers have reported a 90% and above score. You might want to place an order with us."

Affordable prices

You might be focused on looking for a cheap essay writing service instead of searching for the perfect combination of quality and affordable rates. You need to be aware that a cheap essay does not mean a good essay, as qualified authors estimate their knowledge realistically. At the same time, it is all about balance. We are proud to offer rates among the best on the market and believe every student must have access to effective writing assistance for a cost that he or she finds affordable.

Caring support 24/7

If you need a cheap paper writing service, note that we combine affordable rates with excellent customer support. Our experienced support managers professionally resolve issues that might appear during your collaboration with our service. Apply to them with questions about orders, rates, payments, and more. Contact our managers via our website or email.

Non-plagiarized papers

“Please, write my paper, making it 100% unique.” We understand how vital it is for students to be sure their paper is original and written from scratch. To us, the reputation of a reliable service that offers non-plagiarized texts is vital. We stop collaborating with authors who get caught in plagiarism to avoid confusion. Besides, our customers’ satisfaction rate says it all.

Home

About Us

Professional Writing Services

Contact Custom Essay Writers

Order Custom Essay