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What Is Null Value? Why Is It Useful in the Database

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What is null value? Why is it useful in the database?


Definitions:

Tax Bracket

A range of incomes taxed at a specific rate, with different portions of income being taxed at progressively higher rates as income increases.

Collateral

An asset that a borrower offers to a lender as security for a loan, which can be seized if the borrower fails to repay the loan.

Callable Bond

A type of bond that gives the issuer the right to pay off the bond before its maturity date.

Debenture

A type of debt instrument that is not secured by physical assets or collateral.

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