When Modifying Data in Existing Columns,which of the Following Is

question 33

Multiple Choice

When modifying data in existing columns,which of the following is correct?​

• A) ​A column must be as wide as the data it already contains.
• B) ​If a NUMBER column already contains data,its precision and scale can be decreased.
• C) ​Changing the default value of a column will change the values of data already in a table.
• D) ​If a NUMBER column is empty,its precision and scale cannot be changed.

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Definitions:

Depreciating

Depreciating refers to the reduction in the value of an asset over time due to factors such as wear and tear or obsolescence.

Exports

Goods or services produced in one country and sold to customers in other countries, contributing to a nation's economy.

Imports

Goods or services brought into one country from another for the purpose of trade or sale.

Business Cycle

The cyclical fluctuations in economic activity and growth that an economy experiences over time, typically consisting of expansion, peak, contraction, and trough phases.