diff --git a/src/main/resources/config/liquibase/changelog/20190506185600_constraints_UserRoleAssignment.xml b/src/main/resources/config/liquibase/changelog/20190506185600_constraints_UserRoleAssignment.xml
new file mode 100644
index 00000000..2a0e4ec1
--- /dev/null
+++ b/src/main/resources/config/liquibase/changelog/20190506185600_constraints_UserRoleAssignment.xml
@@ -0,0 +1,14 @@
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diff --git a/src/main/resources/config/liquibase/historicization/historicization_UserRoleAssignment.xml b/src/main/resources/config/liquibase/historicization/historicization_UserRoleAssignment.xml
new file mode 100644
index 00000000..b5d55fdd
--- /dev/null
+++ b/src/main/resources/config/liquibase/historicization/historicization_UserRoleAssignment.xml
@@ -0,0 +1,87 @@
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+ CREATE TRIGGER user_role_assignment_historicize
+ AFTER INSERT OR DELETE OR UPDATE ON user_role_assignment
+ FOR EACH ROW EXECUTE PROCEDURE historicize();
+
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+ DROP TRIGGER user_role_assignment_historicize
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+ SELECT *
+ FROM user_role_assignment_history
+ WHERE history_id IN (
+ SELECT max(history_id) AS history_id
+ FROM user_role_assignment_history
+ WHERE history_transaction <= current_setting('history.transaction')::bigint
+ GROUP BY entity_type_id, entity_object_id, assigned_role, user_id)
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diff --git a/src/main/resources/config/liquibase/master.xml b/src/main/resources/config/liquibase/master.xml
index 9842d7a3..bc1ac640 100644
--- a/src/main/resources/config/liquibase/master.xml
+++ b/src/main/resources/config/liquibase/master.xml
@@ -22,8 +22,12 @@
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