A Relational Algebra Operator Produces the Following Result on the Table

question 3

Multiple Choice

A relational algebra operator produces the following result on the table Department: $$\begin{array} { | l | l | l | } \hline \text { Deptno } & \text { Deptname } & \text { Deptcity } \\\hline 100 & \text { Logistics } & \text { Wichita } \\\hline 200 & \text { Finance } & \text { Boise } \\\hline 300 & \text { Marketing } & \text { Pierre } \\\hline\end{array}$$ That operator is:

• A) The restrict operator
• B) The project operator
• C) The extended cross product operator
• D) A join operator

---

Definitions:

Monopoly Power

The ability of a monopolist to significantly control market price and exclude competitors by owning a majority of the market share.

Demand Function

A mathematical relationship expressing the quantity of an item demanded at various prices.

Marginal Costs

The amount spent to produce a further unit of a good or service.

Deadweight Loss

A loss of economic efficiency that can occur when equilibrium for a good or service is not achieved or is not achievable.