# Discovering the data

### In this section

* [Actions on preparation columns](https://help.qlik.com/talend/en-US/data-preparation-user-guide/8.0/actions-on-preparation-columns)
* [Using the global search](https://help.qlik.com/talend/en-US/data-preparation-user-guide/8.0/using-global-search)
* [Finding similar values](https://help.qlik.com/talend/en-US/data-preparation-user-guide/8.0/finding-similar-values)
* [Identifying if a column matches a pattern](https://help.qlik.com/talend/en-US/data-preparation-user-guide/8.0/identifying-if-column-matches-pattern)
* [Aggregating data using charts](https://help.qlik.com/talend/en-US/data-preparation-user-guide/8.0/aggregating-data-using-charts)
* [Using regular expressions to match content](https://help.qlik.com/talend/en-US/data-preparation-user-guide/8.0/using-regular-expressions-to-match-content)
* [Regular Expressions](https://help.qlik.com/talend/en-US/data-preparation-user-guide/8.0/regular-expressions)