CRM/MemberMembershipLogcivicrm_membership_logtrueLogs actions which affect a Membership record (signup, status override, renewal, etc.)1.5CiviMember id int unsigned true 1.5 Number id true membership_id int unsigned true FK to Membership table Membership 1.5 membership_id civicrm_membership id 1.5 CASCADE status_id int unsigned true New status assigned to membership by this action. FK to Membership Status Membership Status 1.5 status_id civicrm_membership_status id 1.5 CASCADE start_date date /\d{4}-?\d{2}-?\d{2}/ New membership period start date 1.5 end_date date /\d{4}-?\d{2}-?\d{2}/ New membership period expiration date. 1.5 modified_id int unsigned FK to Contact ID of person under whose credentials this data modification was made. Modified By true 1.5 modified_id civicrm_contact id 1.5 SET NULL modified_date date /\d{4}-?\d{2}-?\d{2}/ Date this membership modification action was logged. 1.5 membership_type_id int unsigned FK to Membership Type. Membership Type 3.4 membership_type_id civicrm_membership_type id 3.4 SET NULL max_related int Maximum number of related memberships. 4.3