diff --git a/types/db.go b/types/db.go
index 4dbde7e..2213dbb 100644
--- a/types/db.go
+++ b/types/db.go
@@ -51,7 +51,13 @@ type (
 	// standard PassportID,PassportIdentity definition.
 	Std_Passport struct {
 		PassportID       uint   `gorm:"column:passport_id;Index;" json:"passport_id"`
-		PassportIdentity string `gorm:"column:passport_identity;type:varchar(36);Index;"  json:"passport_identity"` // 用户唯一标识，24位NanoID,36位为ULID
+		PassportIdentity string `gorm:"column:passport_identity;type:varchar(36);Index;"  json:"passport_identity"` // 用户唯一标识，24位NanoID,36位为UUID
+	}
+
+	// standard OwnerID,OwnerIdentity definition.
+	Std_Owner struct {
+		OwnerID       uint   `gorm:"column:owner_id;Index;" json:"owner_id"`
+		OwnerIdentity string `gorm:"column:owner_identity;type:varchar(36);Index;"  json:"owner_identity"` // 用户唯一标识，24位NanoID,36位为UUID
 	}
 
 	// standard ID definition.
@@ -61,7 +67,7 @@ type (
 
 	// standard Identity definition.
 	Std_Identity struct {
-		Identity string `gorm:"column:identity;type:varchar(36);uniqueIndex;"  json:"identity"` // 唯一标识，24位NanoID,36位为ULID
+		Identity string `gorm:"column:identity;type:varchar(36);uniqueIndex;"  json:"identity"` // 唯一标识，24位NanoID,36位为UUID
 	}
 
 	// standard Status definition.