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Question:
(a) What is ODBC and what is its function?
(b) What is Web application server, and how does it work from a database perspective?
(c) What does e-commerce mean and how did it evolved?
(d) Identify and briefly describe three benefits and three disadvantages of e-commerce.
(e) Define and contrast B2B and B2C e-commerce styles and support your answer with appropriate example.
(f) Describe e-commerce architecture, then briefly describe each one of its components.
Given the following set of functional dependencies {cf→ bg, g → d, cdg → f, b → de, d → c} defined on R(b,c,d,e,f,g) a. Is cf→ e implied by the FDs? b. Is dg a superkey?
Question: (a) Prepare an ERD for the scenario given below. (b) Convert the ER diagram produced in (a) above into its physical design. You have to choose an appropriate Pri
Determine Which is not a consequence of concurrent operations? Ans: Update anomaly.
Write a short note on QBE? Stands for "Query By Example." QBE is a feature involved along with various database applications which gives user-friendly techniques of running da
Project Description: We have purchased facebook style chat software which we are using with our site. It is prepared in PHP but the rest of the site is developed asp.net. Iss
Ask questioYou are the database administrator in a university. You have been tasked to come up with a new database for the University. Using the stages in Database Life Cycle come
Compare the Nested-loop join and block-nested loop join Ans: Nested loop join - It is costly as worst case cost, no. of block accesses needed is n r * b s + b r where b
What is the most significant feature that does not directly map into programming language structures? Why? Association, since there are complex types of association, like as qu
What is meant by log-based recovery? The most widely used structures for recording database changes is the log. The log is a sequence of log records, recording all the update a
Consider a table student (std_id, std_name, date_of_birth, percent_marks, dept_name). Write a QBE query to display names of Computer Science department students who have scored mo
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