Is there an Entity Relationship Diagram (ERD) for Liferay DXP?

Issue

• I'm looking for an entity relationship diagram (ERD) for Liferay DXP
• Is there a diagram that maps the entity relationships?

Environment

• Liferay DXP

Resolution

• Liferay does not provide an Entity Relationship Diagram
• The database should not be manually modified
• Look to the API for accessing any of the stored data, or Liferay source code to gain a better understanding of the product.  

Additional Information

• Liferay DXP Source Code Access
• https://liferay.dev/forums/-/message_boards/message/118201031