CRM/CaseCaseContactcivicrm_case_contactJoining table for case-contact associations.2.1trueCiviCase id int unsigned true Unique case-contact association id Number 2.1 id true case_id int unsigned true Case ID of case-contact association. Case 2.1 case_id civicrm_case id 2.1 CASCADE contact_id int unsigned true Contact ID of contact record given case belongs to. EntityRef Contact 2.1 contact_id civicrm_contact id 2.1 CASCADE UI_case_contact_id case_id contact_id true 2.1