diff --git a/store/db/mysql/memo.go b/store/db/mysql/memo.go
index 7b14686d..5b2e0535 100644
--- a/store/db/mysql/memo.go
+++ b/store/db/mysql/memo.go
@@ -12,9 +12,9 @@ import (
 )
 
 func (d *DB) CreateMemo(ctx context.Context, create *store.Memo) (*store.Memo, error) {
-	fields := []string{"`creator_id`", "`content`", "`visibility`"}
-	placeholder := []string{"?", "?", "?"}
-	args := []any{create.CreatorID, create.Content, create.Visibility}
+	fields := []string{"`resource_name`", "`creator_id`", "`content`", "`visibility`"}
+	placeholder := []string{"?", "?", "?", "?"}
+	args := []any{create.ResourceName, create.CreatorID, create.Content, create.Visibility}
 
 	stmt := "INSERT INTO `memo` (" + strings.Join(fields, ", ") + ") VALUES (" + strings.Join(placeholder, ", ") + ")"
 	result, err := d.db.ExecContext(ctx, stmt, args...)
@@ -43,6 +43,9 @@ func (d *DB) ListMemos(ctx context.Context, find *store.FindMemo) ([]*store.Memo
 	if v := find.ID; v != nil {
 		where, args = append(where, "`memo`.`id` = ?"), append(args, *v)
 	}
+	if v := find.ResourceName; v != nil {
+		where, args = append(where, "`memo`.`resource_name` = ?"), append(args, *v)
+	}
 	if v := find.CreatorID; v != nil {
 		where, args = append(where, "`memo`.`creator_id` = ?"), append(args, *v)
 	}
@@ -91,6 +94,7 @@ func (d *DB) ListMemos(ctx context.Context, find *store.FindMemo) ([]*store.Memo
 
 	fields := []string{
 		"`memo`.`id` AS `id`",
+		"`memo`.`resource_name` AS `resource_name`",
 		"`memo`.`creator_id` AS `creator_id`",
 		"UNIX_TIMESTAMP(`memo`.`created_ts`) AS `created_ts`",
 		"UNIX_TIMESTAMP(`memo`.`updated_ts`) AS `updated_ts`",
@@ -122,6 +126,7 @@ func (d *DB) ListMemos(ctx context.Context, find *store.FindMemo) ([]*store.Memo
 		var memo store.Memo
 		dests := []any{
 			&memo.ID,
+			&memo.ResourceName,
 			&memo.CreatorID,
 			&memo.CreatedTs,
 			&memo.UpdatedTs,
@@ -161,6 +166,9 @@ func (d *DB) GetMemo(ctx context.Context, find *store.FindMemo) (*store.Memo, er
 
 func (d *DB) UpdateMemo(ctx context.Context, update *store.UpdateMemo) error {
 	set, args := []string{}, []any{}
+	if v := update.ResourceName; v != nil {
+		set, args = append(set, "`resource_name` = ?"), append(args, *v)
+	}
 	if v := update.CreatedTs; v != nil {
 		set, args = append(set, "`created_ts` = FROM_UNIXTIME(?)"), append(args, *v)
 	}
diff --git a/store/db/mysql/migration/dev/LATEST__SCHEMA.sql b/store/db/mysql/migration/dev/LATEST__SCHEMA.sql
index 2ff4b65e..b5379a34 100644
--- a/store/db/mysql/migration/dev/LATEST__SCHEMA.sql
+++ b/store/db/mysql/migration/dev/LATEST__SCHEMA.sql
@@ -36,6 +36,7 @@ CREATE TABLE `user_setting` (
 -- memo
 CREATE TABLE `memo` (
   `id` INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
+  `resource_name` VARCHAR(256) NOT NULL UNIQUE,
   `creator_id` INT NOT NULL,
   `created_ts` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
   `updated_ts` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
diff --git a/store/db/postgres/memo.go b/store/db/postgres/memo.go
index f363818f..ad74a372 100644
--- a/store/db/postgres/memo.go
+++ b/store/db/postgres/memo.go
@@ -12,8 +12,8 @@ import (
 )
 
 func (d *DB) CreateMemo(ctx context.Context, create *store.Memo) (*store.Memo, error) {
-	fields := []string{"creator_id", "content", "visibility"}
-	args := []any{create.CreatorID, create.Content, create.Visibility}
+	fields := []string{"resource_name", "creator_id", "content", "visibility"}
+	args := []any{create.ResourceName, create.CreatorID, create.Content, create.Visibility}
 
 	stmt := "INSERT INTO memo (" + strings.Join(fields, ", ") + ") VALUES (" + placeholders(len(args)) + ") RETURNING id, created_ts, updated_ts, row_status"
 	if err := d.db.QueryRowContext(ctx, stmt, args...).Scan(
@@ -34,6 +34,9 @@ func (d *DB) ListMemos(ctx context.Context, find *store.FindMemo) ([]*store.Memo
 	if v := find.ID; v != nil {
 		where, args = append(where, "memo.id = "+placeholder(len(args)+1)), append(args, *v)
 	}
+	if v := find.ResourceName; v != nil {
+		where, args = append(where, "memo.resource_name = "+placeholder(len(args)+1)), append(args, *v)
+	}
 	if v := find.CreatorID; v != nil {
 		where, args = append(where, "memo.creator_id = "+placeholder(len(args)+1)), append(args, *v)
 	}
@@ -82,6 +85,7 @@ func (d *DB) ListMemos(ctx context.Context, find *store.FindMemo) ([]*store.Memo
 
 	fields := []string{
 		`memo.id AS id`,
+		`memo.resource_name AS resource_name`,
 		`memo.creator_id AS creator_id`,
 		`memo.created_ts AS created_ts`,
 		`memo.updated_ts AS updated_ts`,
@@ -118,6 +122,7 @@ func (d *DB) ListMemos(ctx context.Context, find *store.FindMemo) ([]*store.Memo
 		var memo store.Memo
 		dests := []any{
 			&memo.ID,
+			&memo.ResourceName,
 			&memo.CreatorID,
 			&memo.CreatedTs,
 			&memo.UpdatedTs,
@@ -157,6 +162,9 @@ func (d *DB) GetMemo(ctx context.Context, find *store.FindMemo) (*store.Memo, er
 
 func (d *DB) UpdateMemo(ctx context.Context, update *store.UpdateMemo) error {
 	set, args := []string{}, []any{}
+	if v := update.ResourceName; v != nil {
+		set, args = append(set, "resource_name = "+placeholder(len(args)+1)), append(args, *v)
+	}
 	if v := update.CreatedTs; v != nil {
 		set, args = append(set, "created_ts = "+placeholder(len(args)+1)), append(args, *v)
 	}
diff --git a/store/db/postgres/migration/dev/LATEST__SCHEMA.sql b/store/db/postgres/migration/dev/LATEST__SCHEMA.sql
index 8c414fd1..b31e5f4e 100644
--- a/store/db/postgres/migration/dev/LATEST__SCHEMA.sql
+++ b/store/db/postgres/migration/dev/LATEST__SCHEMA.sql
@@ -36,6 +36,7 @@ CREATE TABLE user_setting (
 -- memo
 CREATE TABLE memo (
   id SERIAL PRIMARY KEY,
+  resource_name TEXT NOT NULL UNIQUE,
   creator_id INTEGER NOT NULL,
   created_ts BIGINT NOT NULL DEFAULT EXTRACT(EPOCH FROM NOW()),
   updated_ts BIGINT NOT NULL DEFAULT EXTRACT(EPOCH FROM NOW()),