Examlex
Every subquery can be alternatively expressed by a join.
Externalities
Economic side effects or consequences that affect uninvolved third parties; can be either positive or negative.
Externality
Actions of one party impose costs or benefits on a second party.
Economy of Scale
The cost advantages that enterprises obtain due to their scale of operation, typically resulting in decreased per-unit cost as production increases.
Public Good
A good that is non-excludable and non-rivalrous, meaning it can be used by everyone and one person's use doesn't reduce its availability to others.
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