Which statement correctly describes currency codes in currency-related columns?

Which statement correctly describes currency codes in currency-related columns?

• A. They are represented as a three-letter alphabetical code (USD, EUR, AUD, BRL)
• B. They are represented as numeric codes
• C. They use the currency symbol in the data
• D. They are written as full currency names

Answer: (A)

Currency codes in data columns follow the ISO 4217 standard, using three-letter codes like USD, EUR, AUD, BRL. This three-letter format is designed to be unambiguous and language-neutral, so the same code always identifies the same currency across systems and locales. It makes data easier to sort, filter, and perform conversions, and it avoids ambiguity from symbols that vary by country or font. While numeric ISO codes exist and currency symbols or full names can be used, the common practice for a stable, machine-readable column is the three-letter code because it uniquely identifies the currency and stays consistent internationally.

Currency codes in data columns follow the ISO 4217 standard, using three-letter codes like USD, EUR, AUD, BRL. This three-letter format is designed to be unambiguous and language-neutral, so the same code always identifies the same currency across systems and locales. It makes data easier to sort, filter, and perform conversions, and it avoids ambiguity from symbols that vary by country or font. While numeric ISO codes exist and currency symbols or full names can be used, the common practice for a stable, machine-readable column is the three-letter code because it uniquely identifies the currency and stays consistent internationally.