Users
Drupal core has a subsystem for user management. The foundational feature serves as the tool in which users can access Drupal’s backend systems. This is fundamental for site builders and content managers.
User entity
The user subsystem starts with the user entity. This entity, like others, is built on top of the entity system and is afforded structured data and management for Drupal users.
The user entity is fieldable. Enabling fields for users affords the ability for site builders to configure user profiles. By default, the user entity has a username, password, and email, all of which can’t be modifiable but can be harnessed by the features in the user subsystem.
Features
The user subsystem has several features that are built on top of the user entity.
Users can log into Drupal to perform administrative actions and manage content, as well as site-building. This leverages the entity’s username and password. The following figure shows Drupal...