Classification of database management systems, Basic Computer Science

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Question 1:

(a) Describe the three ways of classification of Database management systems (DBMS).

(b) Why are System Analysts and Database Administrators needed in companies?

Question 2:

(a) Write short notes on web portal.

(b) Explain what is E-Commerce and how it has arisen in businesses from the traditional commerce like electronic data interchange (EDI).

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