Quality information that can be used for a variety of purposes is said to be flexible. Information quality is a developing concept to many organisation considering the increase in data storage and collection, and the mining data for many businesses the quality of information produced becomes increasingly important.
A(n) <u>natural</u> join returns not only the rows matching the join condition (that is, rows with matching values in the common columns) but also the rows with unmatched values.
<h3><u>What is a "natural join"?</u></h3>
By default, natural joins are natural inner joins, however, they can also be natural left, right, and full outer joins. The main distinction between an inner join and a natural join is that an inner join has a join condition that is specified explicitly, whereas a natural join's conditions are determined by matching all pairs of columns in the tables that have the same name and compatible data types, which makes natural joins equijoin because the join condition is equal between common columns.
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A direct democracy is when citizens participate in making political decisions. A representative democracy is when the citizens hold the sovereign power but, political power is exercised indirectly through elected representatives.
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