What is the purpose of the ROUND function in Oracle?

In Oracle, the ROUND function is used to round a number to a specified number of decimal places or integer places. Its purpose is to adjust the precision or range of a number. The ROUND function has two parameters: the first parameter is the number to be rounded, and the second parameter is the number of decimal places or integer places to keep or truncate from the right. If the second parameter is omitted, the default value is 0, indicating rounding to the nearest integer. The ROUND function returns a result of the same type as the original number.