> For the complete documentation index, see [llms.txt](https://docs.pentaho.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.pentaho.com/pdc-10.2-data-optimizer/pdso-management/pdso-use-rules/pdc-rule-definitions.md).
# Rule definitions
Rule definitions specify the criteria and actions performed by a rule.
Click **Definitions** on the **Metadata Rules** card to open the **Rule Definitions** table on the Manage Metadata Rules page.
The information in the **Rule Definitions** table is described below.
| Column | Description |
| ----------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **Rule Definition** | The name of the rule definition. |
| **Description** | The description of the rule definition. |
| **Created By** | The creator of the rule definition. |
| **Rule Type** | The type of rule definition. |
| **Applied Rule** | Shows whether the rule definition was applied. |
| **State** | Controls the state of the rule definition:
- Click Enable to enable the rule definition for use.
- Click Disable to disable the rule definition.
|
| **View** | Click to view the rule definition. |
| 
| The More options icon:
- Click and choose Edit to edit the rule definition.
- Click and choose Delete to delete the rule definition.
|
| 
| The **Delete** icon. Click to delete a rule definition. |
Click \*\*Import Rule Definition\*\* or \*\*Export Rule Definition\*\*, respectively, to import or export a rule definition. See the following topics when importing or exporting rule definitions:
*
*
Click **Add Rule Definition** to add a new rule definition. See the following topics when working with rule definitions:
* [Creating a rule definition](/pdc-10.2-data-optimizer/pdso-management/pdso-use-rules/pdc-rule-definitions/pdc-creating-a-rule-definition.md)
* [Editing a rule definition](/pdc-10.2-data-optimizer/pdso-management/pdso-use-rules/pdc-rule-definitions/pdc-editing-a-rule-definition.md)
* [Deleting a rule definition](/pdc-10.2-data-optimizer/pdso-management/pdso-use-rules/pdc-rule-definitions/pdc-deleting-a-rule-definition.md)
---
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