# Licensing Pentaho

The license you purchase for Data Catalog determines the following usage you are allowed:

* Additional features that you can use (such as Pentaho Data Optimizer and Pentaho Data Mastering)
* The number of data sources you can add
* The amount of data you can scan
* The number of Expert user roles that you can assign to users. The Expert user roles are:
  * Business Steward
  * Data Steward
  * Admin
  * Data Developer

To calculate the total number of users for licensing, use the following table for mapping from product role to licensing role. A named user with multiple product roles maps into a single user for licensing consideration. For example, if a user is assigned the roles of data source administrator and data source access manager, this is considered a single licensed Data Steward. If two distinct users are assigned these two roles, then they are considered two licensed Data Stewards.

| Product roles                       | Licensing considerations |
| ----------------------------------- | ------------------------ |
| Owner                               | Admin User               |
| Reader                              | Business User            |
| User Access Administrator           | Admin User               |
| Data Source Administrator           | Data Steward             |
| Data Source Access Manager          | Data Steward             |
| Data Quality Administrator          | Data Steward             |
| Data Quality Operator               | Data Steward             |
| Data Quality Rule Approver          | Data Steward             |
| Data Profiler                       | Data Steward             |
| Data Sample Viewer                  | Business User            |
| Data Tagger                         | Data Steward             |
| Data Tag Viewer                     | Data Steward             |
| Business Glossary Administrator     | Data Steward             |
| Business Glossary Mapper            | Data Steward             |
| Data Identification Methods Manager | Data Steward             |
| Data Source Steward                 | Data Steward             |


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