CRM/CoreEntityFilecivicrm_entity_fileAttaches (joins) uploaded files (images, documents, etc.) to entities (Contacts, Groups, Actions).1.5true id int unsigned true primary key Number 1.5 id true entity_table varchar true 64 physical tablename for entity being joined to file, e.g. civicrm_contact CRM_Core_BAO_File::getEntityTables 1.5 entity_id int unsigned true FK to entity table specified in entity_table column. 1.5 entity_id entity_table 1.5 file_id int unsigned true FK to civicrm_file File 1.5 file_id civicrm_file id 1.5 UI_entity_id_entity_table_file_id entity_id entity_table file_id true 1.1