# Defining the rule

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

## Procedure

1. In the DQ repository tree view, expand Libraries > Rules.
2. Right-click Match and select New Match Rule.
3. In the New Match Rule wizard, enter a name and set other metadata, if required.

   Information noteImportant:

   Do not use the following special characters in the item names: ~ ! ` # ^ * & \\ / ? : ; \ , . ( ) ¥ ' " « » < >

   These characters are all replaced with "\_" in the file system and you may end up creating duplicate items.

   Consider as an example that you want to create a rule to match customer full names.
4. Click Finish.

   A match rule editor opens in Talend Studio and the new match rule is listed under Libraries &gt; Rule &gt; Match in the DQ repository tree view.

   In the Matching Algorithm section, the Simple VSR algorithm is selected by default.
5. Start defining the match rule items as described in [Rules with the VSR algorithm](https://help.qlik.com/talend/en-US/studio-user-guide/8.0/rules-with-vsr-algorithm) and [Rules with the T-Swoosh algorithm](https://help.qlik.com/talend/en-US/studio-user-guide/8.0/rules-with-t-swoosh-algorithm).