diff --git a/application/src/main/data/upgrade/3.4.3/schema_update.sql b/application/src/main/data/upgrade/3.4.3/schema_update.sql
index 09398588b3..44ef280553 100644
--- a/application/src/main/data/upgrade/3.4.3/schema_update.sql
+++ b/application/src/main/data/upgrade/3.4.3/schema_update.sql
@@ -17,7 +17,7 @@
 CREATE TABLE IF NOT EXISTS notification_target (
     id UUID NOT NULL CONSTRAINT notification_target_pkey PRIMARY KEY,
     created_time BIGINT NOT NULL,
-    tenant_id UUID NOT NULL,
+    tenant_id UUID NOT NULL CONSTRAINT fk_notification_target_tenant_id REFERENCES tenant(id) ON DELETE CASCADE,
     name VARCHAR(255) NOT NULL,
     configuration VARCHAR(10000) NOT NULL
 );
@@ -26,7 +26,7 @@ CREATE INDEX IF NOT EXISTS idx_notification_target_tenant_id_created_time ON not
 CREATE TABLE IF NOT EXISTS notification_template (
     id UUID NOT NULL CONSTRAINT notification_template_pkey PRIMARY KEY,
     created_time BIGINT NOT NULL,
-    tenant_id UUID NOT NULL,
+    tenant_id UUID NOT NULL CONSTRAINT fk_notification_template_tenant_id REFERENCES tenant(id) ON DELETE CASCADE,
     name VARCHAR(255) NOT NULL,
     configuration VARCHAR(10000) NOT NULL
 );
@@ -34,7 +34,7 @@ CREATE TABLE IF NOT EXISTS notification_template (
 CREATE TABLE IF NOT EXISTS notification_rule (
     id UUID NOT NULL CONSTRAINT notification_rule_pkey PRIMARY KEY,
     created_time BIGINT NOT NULL,
-    tenant_id UUID NOT NULL,
+    tenant_id UUID NOT NULL CONSTRAINT fk_notification_rule_tenant_id REFERENCES tenant(id) ON DELETE CASCADE,
     name VARCHAR(255) NOT NULL,
     template_id UUID NOT NULL CONSTRAINT fk_notification_rule_template_id REFERENCES notification_template(id),
     delivery_methods VARCHAR(255),
@@ -45,7 +45,7 @@ CREATE TABLE IF NOT EXISTS notification_rule (
 CREATE TABLE IF NOT EXISTS notification_request (
     id UUID NOT NULL CONSTRAINT notification_request_pkey PRIMARY KEY,
     created_time BIGINT NOT NULL,
-    tenant_id UUID NOT NULL,
+    tenant_id UUID NOT NULL CONSTRAINT fk_notification_request_tenant_id REFERENCES tenant(id) ON DELETE CASCADE,
     target_id UUID NOT NULL CONSTRAINT fk_notification_request_target_id REFERENCES notification_target(id),
     type VARCHAR(255) NOT NULL,
     template_id UUID NOT NULL CONSTRAINT fk_notification_request_template_id REFERENCES notification_template(id),
diff --git a/dao/src/main/resources/sql/schema-entities.sql b/dao/src/main/resources/sql/schema-entities.sql
index c3dace68fe..c5d6ada139 100644
--- a/dao/src/main/resources/sql/schema-entities.sql
+++ b/dao/src/main/resources/sql/schema-entities.sql
@@ -783,7 +783,7 @@ CREATE TABLE IF NOT EXISTS user_auth_settings (
 CREATE TABLE IF NOT EXISTS notification_target (
     id UUID NOT NULL CONSTRAINT notification_target_pkey PRIMARY KEY,
     created_time BIGINT NOT NULL,
-    tenant_id UUID NOT NULL,
+    tenant_id UUID NOT NULL CONSTRAINT fk_notification_target_tenant_id REFERENCES tenant(id) ON DELETE CASCADE,
     name VARCHAR(255) NOT NULL,
     configuration VARCHAR(10000) NOT NULL
 );
@@ -791,7 +791,7 @@ CREATE TABLE IF NOT EXISTS notification_target (
 CREATE TABLE IF NOT EXISTS notification_template (
     id UUID NOT NULL CONSTRAINT notification_template_pkey PRIMARY KEY,
     created_time BIGINT NOT NULL,
-    tenant_id UUID NOT NULL,
+    tenant_id UUID NOT NULL CONSTRAINT fk_notification_template_tenant_id REFERENCES tenant(id) ON DELETE CASCADE,
     name VARCHAR(255) NOT NULL,
     configuration VARCHAR(10000) NOT NULL
 );
@@ -799,7 +799,7 @@ CREATE TABLE IF NOT EXISTS notification_template (
 CREATE TABLE IF NOT EXISTS notification_rule (
     id UUID NOT NULL CONSTRAINT notification_rule_pkey PRIMARY KEY,
     created_time BIGINT NOT NULL,
-    tenant_id UUID NOT NULL,
+    tenant_id UUID NOT NULL CONSTRAINT fk_notification_rule_tenant_id REFERENCES tenant(id) ON DELETE CASCADE,
     name VARCHAR(255) NOT NULL,
     template_id UUID NOT NULL CONSTRAINT fk_notification_rule_template_id REFERENCES notification_template(id),
     delivery_methods VARCHAR(255),
@@ -810,7 +810,7 @@ CREATE TABLE IF NOT EXISTS notification_rule (
 CREATE TABLE IF NOT EXISTS notification_request (
     id UUID NOT NULL CONSTRAINT notification_request_pkey PRIMARY KEY,
     created_time BIGINT NOT NULL,
-    tenant_id UUID NOT NULL,
+    tenant_id UUID NOT NULL CONSTRAINT fk_notification_request_tenant_id REFERENCES tenant(id) ON DELETE CASCADE,
     target_id UUID NOT NULL CONSTRAINT fk_notification_request_target_id REFERENCES notification_target(id),
     type VARCHAR(255) NOT NULL,
     template_id UUID NOT NULL CONSTRAINT fk_notification_request_template_id REFERENCES notification_template(id),