## Rules and dimensions

URL: https://docs.atlan.com/product/capabilities/governance/data-quality/snowflake/references/data-quality-rules

> Reference for available data quality rules and classification dimensions in Snowflake data quality.

This document lists the data quality rules and classification dimensions available in Snowflake Data Quality Studio.

## Predefined data quality rules

During the private preview, Atlan provides a set of predefined data quality rules, including:

- **Blank & Null Checks**
 - Blank count
 - Blank percentage 
 - Null count
 - Null percentage

- **Volume Checks**
	- Row count

- **Freshness Metrics**
 - Data freshness tracking

- **Statistical Data Exploration**
 - Average value
 - Minimum value
 - Maximum value
 - Standard deviation

- **Uniqueness & Duplicates**
 - Duplicate count
 - Unique count

- **String Validations**
 - Regex
 - String Length
 - Valid Values
 - Reference

- **Reconciliation Checks**
 - Row Count Reconciliation
 - Average Reconciliation
 - Sum Reconciliation
 - Duplicate Count Reconciliation
 - Unique Count Reconciliation

## Data quality dimensions

To provide better context and insights, Atlan classifies results into key data quality dimensions:

- ✅ **Accuracy**: Verifying correctness and reliability
- ⏳ **Timeliness**: Validating data freshness and latency
- 📏 **Validity**: Checking data formats and constraints
- 📋 **Completeness**: Measuring missing or incomplete data
- 🔗 **Consistency**: Maintaining data follows the same format and standards across datasets
- 🔢 **Uniqueness**: Verifying data records are distinct and free from duplicates 
- 📊 **Volume**: Measuring data quantity and row counts

## See also

* [Use AI-suggested rules](https://docs.atlan.com/llms/governance/data-quality/use-ai-suggested-rules/llms.txt): Let Atlan AI automatically suggest data quality rules based on your asset's metadata
* [Set up BigQuery](https://docs.atlan.com/llms/governance/data-quality/set-up-bigquery/llms.txt) - Configure BigQuery for data quality monitoring
* [Set up Databricks](https://docs.atlan.com/llms/governance/data-quality/set-up-databricks/llms.txt) - Configure Databricks for data quality monitoring
* [Set up Snowflake](https://docs.atlan.com/llms/governance/data-quality/set-up-snowflake/llms.txt) - Configure Snowflake for data quality monitoring

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