> ## Documentation Index
> Fetch the complete documentation index at: https://docs.validio.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Relative Volume

> Compare the difference in row count between two datasets.

## Validator overview

The Relative Volume validator compares row counts between a target dataset and a reference dataset. You can configure the relative volume validator to monitor the following metrics:

| Metric Options | Description |
| :- | :- |
| Count Ratio | Calculates the ratio between the number of rows in the target dataset and the number of rows in the reference dataset. |
| Percentage Ratio | Calculates the the number of rows in the target dataset as a percentage of the number of rows in the reference dataset. |

Relative volume validators support reference source configuration for data validation. For more information, see [Reference Source Validation](https://docs.validio.io/v11.1/docs/validators/validators-configuration/reference-source-config.md). For an overview of all validator types, see [Validator Types](https://docs.validio.io/v11.1/docs/validators/validator-types.md).

## Metric configuration parameters

Configure the validator metric calculation with the the following parameters:

| Parameters | Description |
| :- | :- |
| Metric | Select the metric to calculate. See the Metric Options table. |
| Field | Select a source field from a list of available fields with numeric data type, or `No field (use record)`. The default is to count the entire record. |
| Reference field | Select a reference field from a list of available fields with numeric data type, or `No field (use record)`. The default is to count the entire record. |
| Filter | (Optional) Select from a list of filters or create a new filter to specify which records to include. |
| Reference filter | (Optional) Select from a list of filters or create a new filter to specify which reference records to include. |
| Window | Select from a list of windows or create a new window to specify how to aggregate the data. |
| Reference window offset | Enter a number to specify the how many windows to shift back in time to compare against the current window. |
| Number of reference windows | Enter a number to specify the number of windows to include in the aggregation. |
| Segmentation | (Optional) Apply segmentation to analyze data in separate groups. Default is `Unsegmented`. |