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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.
Use inheritance as an implementation technique when you are going to use inheritance as an implementation technique, you can achieve same goal in a safer way by making one cla
In a relational model how relations are termed? In a relational model, relations are termed as tables. (The term ‘relation’ is the technical name of the ‘table’ in RDBMS)
Determine the language that needs a user to specify the data to be retrieved with no specifying exactly how to get it is Ans: Non-Procedural DML
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
A database to track your progress in your college program will track your progress towards graduation! A database that has information containing the classes that you have taken, c
(a) Explain the three types of potential mistake which could occur if concurrency control is not properly enforced in the database system. Support your answer with appropriate ex
Explain I command in QBE ? I : It is the command in QBE that is used to insert tuple (s) into the database
Given the following relations Vehicle (Reg_no, make, colour) Person(eno, name, address) Owner(eno, reg_no) Write expressions in the relational algebra to answer the following
Describe identifying relationship? Identifying relationship: It is relationship among strong entity and a weak entity it is represented through a doubly outlined diamond in C
Define the Boyce-Codd Normal Form with instance and also Compare BCNF and 3NF. Ans: BCNF: For each functional dependency X->Y in a set F of functional dependencies over relati
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