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What are the main differences functions - wise between SQL and an RDBMS ? The relationship between a database and an information system? How does
What are the main differences functionswise between SQL and an RDBMS The relationship between a database and an information system? How does this relationship have a bearing on database design? When do we have the recourse to using subqueries? How are they executed?Illustrate your answers using one or more practical examples.
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