$$ Illustrate various system development models. $(5$ marks$)$

$$ Discuss how business intelligence support decision making. $(2$ marks$)$

$$ What are the business benefits of using intelligent techniques for knowledge management? $(5$ marks$)$

$$ What are virtual organizations? State its advantages and disadvantages. $(3$ marks$)$

$$ Explain the difference between intension and extension in a database. $(5$ marks