A Primary Key Is an Attribute That Is Required to Exist

question 28

True/False

A primary 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.

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Definitions:

Passive Investment

An investment strategy involving minimal buying and selling actions, typically focused on long-term investment in index funds and ETFs.

Target Date Fund

A mutual fund designed to adjust its asset allocation towards more conservative investments as it approaches a specific target date.

Variable Annuity

An insurance product that provides a retirement income and whose value fluctuates with the performance of the investment options chosen by the holder.

Life Expectancy

The average period that an individual is expected to live, based on demographic factors such as current age and health conditions.