CRM/CoreUFJoincivicrm_uf_joinUser framework join table. This links various internal civicrm object with a profile. Initial use cases are the donation object and the user module1.3true id int unsigned true Unique table ID Number 1.3 id true is_active boolean 1 true CheckBox Enabled Is this join currently active? 1.3 module varchar 64 true Module which owns this uf_join instance, e.g. User Registration, CiviDonate, etc. 1.3 entity_table varchar 64 Name of table where item being referenced is stored. Modules which only need a single collection of uf_join instances may choose not to populate entity_table and entity_id. CRM_Core_BAO_UFJoin::entityTables 1.3 entity_id int unsigned Foreign key to the referenced item. 1.3 entity_id entity_table 1.3 index_entity entity_table entity_id 1.3 weight int true 1 Controls display order when multiple user framework groups are setup for concurrent display. 1.3 uf_group_id int unsigned true Which form does this field belong to. 1.3 civicrm_uf_group id title Select Profile uf_group_id civicrm_uf_group id 1.3 module_data longtext Json serialized array of data used by the ufjoin.module JSON 4.5