# Using validation components

Available in...

* Big Data Platform
* Cloud API Services Platform
* Cloud Big Data Platform
* Cloud Data Fabric
* Cloud Data Management Platform
* Data Fabric
* Data Management Platform
* Data Services Platform
* Qlik Talend Cloud Enterprise Edition
* Qlik Talend Cloud Premium Edition
* Real-Time Big Data Platform

Some data quality components enable you to check data in databases against regular expressions, for example tMultiPatternCheck, tPatternCheck, tMySQLInvalidRows, tMySQLValidRows and other similar components.

Some data quality components enable you to check data in databases against reference data sources. An example component is tSchemaComplianceCheck component.

For further information and example Jobs about the components, see [Data Quality components](https://help.qlik.com/talend/en-US/components/8.0/data-quality-components-container).

The data quality demo project has also ready-to-use Jobs that may use validation components. For further information, see [Importing a data quality demo project](https://help.qlik.com/talend/en-US/studio-user-guide/8.0/importing-data-quality-demo-project).