A Foreign Key Is an Attribute That Is Required to Exist

question 11

True/False

A foreign key is an attribute that is required to exist in each table of a relational database and serves as the unique identifier for each record in a table.

---

Definitions:

Opportunity Costs

The cost of forgoing the next best alternative when making a decision or choosing between options.

Production Possibilities Frontier (PPF)

A curve depicting the maximum output possibilities for two goods, given a set of inputs and technology, illustrating the trade-offs in production choices.

Legal Reform

The process of examining existing laws and making modifications or amendments to improve justice or efficiency.

Productivity

A measure of the efficiency of production, often evaluated as the ratio of output to inputs in the manufacturing process.