The Decimal data type in Db2 is a numeric data type that allows you to store numbers with decimal places. It is commonly used when precision and accuracy are important, such as in financial calculations or scientific measurements.

## Decimal Data Type Syntax

The syntax for defining a Decimal data type in Db2 is as follows:

**DECIMAL(p, s)**

where **p** represents the precision and **s** represents the scale.

The precision (**p**) specifies the total number of digits that can be stored, both before and after the decimal point. The scale (**s**) specifies the maximum number of digits that can be stored after the decimal point.

## Precision and Scale Examples

To better understand how precision and scale work, let’s look at some examples:

__Example 1:__
`DECIMAL(5, 2)`

- This means we can store up to 5 digits in total, with 2 digits after the decimal point.
- Possible values: -999.99 to 999.99

__Example 2:__
`DECIMAL(8, 3)`

- This means we can store up to 8 digits in total, with 3 digits after the decimal point.
- Possible values: -9999.999 to 9999.999

__Example 3:__
`DECIMAL(10, 0)`

- This means we can store up to 10 digits in total, with no decimal places.
- Possible values: -9999999999 to 9999999999

## Working with Decimal Data Type

The Decimal data type allows you to perform various arithmetic operations, such as addition, subtraction, multiplication, and division. When performing calculations with Decimal values, the result will also be a Decimal value.

For example:

`DECIMAL(5, 2) x DECIMAL(3, 1) = DECIMAL(8, 3)`

In this example, multiplying a Decimal value with precision (5, 2) by a Decimal value with precision (3, 1) will result in a Decimal value with precision (8, 3).

### Summary

The Decimal data type in Db2 is a powerful numeric data type that allows you to store numbers with decimal places. It provides control over precision and scale, making it suitable for a wide range of applications. Remember to choose the appropriate precision and scale based on your specific requirements.

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