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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.
explain the mapping constraints
Ask qu. Write a XML with database with book details (Book ID, Title, Author, subject, published year, language, vendor, and price).estion #Minimum 100 words accepted#
An instance of relational schema R (A, B, C) has distinct values of A including NULL values. then A is a candidate key or not? If relational schema R (A, B, C) has distinct val
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explain exhaustively the problems associated with ER diagrams. include illustrations in your answer
File Organisation And Its Types Just as arrays, trees, lists and other data structures are used to execute data Organisation in main memory, a number of planning's are used to
Discuss the problem of Spurious tuples and how we may prevent it. Ans: A spurious tuple is, mainly, a record in a database that gets created while two tables are joined bad
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Explain cursors in SQL? Cursors in SQL - An object used to store the output of a query for row-through-row processing through the application programs. Cursors are constructs
Write short notes on relational constraints? Relational Constraints are: 1. NOT NULL 2. Unique 3. Primary key 4. Foreign key 5. Table check
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