Examlex
A composite key is a primary key that is made up of one field.
World Price
The international market price of a good or service, influenced by global supply and demand.
Import
Bringing in merchandise or services from overseas with the intent to sell them within a country.
Opportunity Cost
The cost of forgoing the next best alternative when making a decision, representing the benefits one misses out on by choosing one option over another.
Trade
The exchange of goods, services, or both between individuals, businesses, or countries.
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