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

# Catalog and Quality After Sync

> After every Zwiron sync, auto-catalog tables and run data quality checks so the warehouse stays searchable and trustworthy.

Sync alone is not enough. Zwiron covers the rest of the cycle: **know what landed** and **catch bad data early**.

## Catalog

After connection profiling and syncs, Zwiron inventories schemas, tables, and columns in the [Data Catalog](/platform/catalog):

* Searchable inventory with types, nullability, and sizes
* Tags and glossary terms for shared vocabulary ([Governance](/platform/governance))
* Always tied to the connections you already sync

## Data quality

Attach [Data Quality](/platform/data-quality) rules to tables or columns:

* Null / uniqueness / range / freshness checks
* Custom SQL assertions
* Alerts when rules fail after a run

For deeper audits, use [Pipeline Validation](/pipelines/validation) to compare source vs destination beyond row counts.

## Typical workflow

1. Create connections and a pipeline ([quickstart](/getting-started/quickstart))
2. Run sync ([ETL pipelines](/pipelines/etl))
3. Open **Catalog** to confirm tables appear
4. Add quality rules on critical columns
5. Monitor failures via [notifications](/platform/notifications)

## Related

* Product use case: [Catalog & quality on zwiron.com](https://zwiron.com/use-cases/warehouse-catalog-quality)
* [Schema validation](/concepts/schema-validation)
* [Connection profiling](/concepts/connection-profiling)