Allow the use of different database servers using the same code base. Overview Drupal's database abstraction
hook_query_alter(Drupal\Core\Database\Query\AlterableInterface $query) Perform alterations to a structured
hook_query_TAG_alter(Drupal\Core\Database\Query\AlterableInterface $query) Perform alterations to a structured
API to handle database schemas. A Drupal schema definition is an array structure representing one or more tables and their related keys and
hook_schema() Define the current version of the database schema. A Drupal schema