What requirements must a two-dimensional table satisfy in order to be a relation?
What will be an ideal response?
For a table to be considered a relation, it must meet several requirements. First, every cell must contain a single value. Second, there can be no duplicate rows. Third, each column must have a unique name. Fourth, the order of the columns must have no significance. Fifth, all values for a given column must be of the same type. Finally, the order of the rows must have no significance.
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Which of the following statements is TRUE?
A) On average, smaller stocks have lower volatility than Treasury bills. B) Portfolios of smaller stocks are typically less volatile than individual small stocks. C) On average, smaller stocks have lower returns than larger stocks. D) On average, Treasury bills have higher returns than stocks.
Which theory proposes that once an organization is successfully established in a particular environmental niche, it is unable to adapt to changing conditions?
A) population ecology B) institution C) citizenship D) strategic choice E) organizational learning