diff --git a/api/models/account.py b/api/models/account.py
index 8c1f990aa2..86cd9e41b5 100644
--- a/api/models/account.py
+++ b/api/models/account.py
@@ -1,15 +1,16 @@
 import enum
 import json
+from dataclasses import field
 from datetime import datetime
 from typing import Any, Optional
 
 import sqlalchemy as sa
 from flask_login import UserMixin  # type: ignore[import-untyped]
 from sqlalchemy import DateTime, String, func, select
-from sqlalchemy.orm import Mapped, Session, mapped_column, reconstructor
+from sqlalchemy.orm import Mapped, Session, mapped_column
 from typing_extensions import deprecated
 
-from models.base import Base
+from models.base import TypeBase
 
 from .engine import db
 from .types import StringUUID
@@ -83,31 +84,37 @@ class AccountStatus(enum.StrEnum):
     CLOSED = "closed"
 
 
-class Account(UserMixin, Base):
+class Account(UserMixin, TypeBase):
     __tablename__ = "accounts"
     __table_args__ = (sa.PrimaryKeyConstraint("id", name="account_pkey"), sa.Index("account_email_idx", "email"))
 
-    id: Mapped[str] = mapped_column(StringUUID, server_default=sa.text("uuid_generate_v4()"))
+    id: Mapped[str] = mapped_column(StringUUID, server_default=sa.text("uuid_generate_v4()"), init=False)
     name: Mapped[str] = mapped_column(String(255))
     email: Mapped[str] = mapped_column(String(255))
-    password: Mapped[str | None] = mapped_column(String(255))
-    password_salt: Mapped[str | None] = mapped_column(String(255))
-    avatar: Mapped[str | None] = mapped_column(String(255), nullable=True)
-    interface_language: Mapped[str | None] = mapped_column(String(255))
-    interface_theme: Mapped[str | None] = mapped_column(String(255), nullable=True)
-    timezone: Mapped[str | None] = mapped_column(String(255))
-    last_login_at: Mapped[datetime | None] = mapped_column(DateTime, nullable=True)
-    last_login_ip: Mapped[str | None] = mapped_column(String(255), nullable=True)
-    last_active_at: Mapped[datetime] = mapped_column(DateTime, server_default=func.current_timestamp(), nullable=False)
-    status: Mapped[str] = mapped_column(String(16), server_default=sa.text("'active'::character varying"))
-    initialized_at: Mapped[datetime | None] = mapped_column(DateTime, nullable=True)
-    created_at: Mapped[datetime] = mapped_column(DateTime, server_default=func.current_timestamp(), nullable=False)
-    updated_at: Mapped[datetime] = mapped_column(DateTime, server_default=func.current_timestamp(), nullable=False)
+    password: Mapped[str | None] = mapped_column(String(255), default=None)
+    password_salt: Mapped[str | None] = mapped_column(String(255), default=None)
+    avatar: Mapped[str | None] = mapped_column(String(255), nullable=True, default=None)
+    interface_language: Mapped[str | None] = mapped_column(String(255), default=None)
+    interface_theme: Mapped[str | None] = mapped_column(String(255), nullable=True, default=None)
+    timezone: Mapped[str | None] = mapped_column(String(255), default=None)
+    last_login_at: Mapped[datetime | None] = mapped_column(DateTime, nullable=True, default=None)
+    last_login_ip: Mapped[str | None] = mapped_column(String(255), nullable=True, default=None)
+    last_active_at: Mapped[datetime] = mapped_column(
+        DateTime, server_default=func.current_timestamp(), nullable=False, init=False
+    )
+    status: Mapped[str] = mapped_column(
+        String(16), server_default=sa.text("'active'::character varying"), default="active"
+    )
+    initialized_at: Mapped[datetime | None] = mapped_column(DateTime, nullable=True, default=None)
+    created_at: Mapped[datetime] = mapped_column(
+        DateTime, server_default=func.current_timestamp(), nullable=False, init=False
+    )
+    updated_at: Mapped[datetime] = mapped_column(
+        DateTime, server_default=func.current_timestamp(), nullable=False, init=False
+    )
 
-    @reconstructor
-    def init_on_load(self):
-        self.role: TenantAccountRole | None = None
-        self._current_tenant: Tenant | None = None
+    role: TenantAccountRole | None = field(default=None, init=False)
+    _current_tenant: "Tenant | None" = field(default=None, init=False)
 
     @property
     def is_password_set(self):
@@ -226,18 +233,24 @@ class TenantStatus(enum.StrEnum):
     ARCHIVE = "archive"
 
 
-class Tenant(Base):
+class Tenant(TypeBase):
     __tablename__ = "tenants"
     __table_args__ = (sa.PrimaryKeyConstraint("id", name="tenant_pkey"),)
 
-    id: Mapped[str] = mapped_column(StringUUID, server_default=sa.text("uuid_generate_v4()"))
+    id: Mapped[str] = mapped_column(StringUUID, server_default=sa.text("uuid_generate_v4()"), init=False)
     name: Mapped[str] = mapped_column(String(255))
-    encrypt_public_key: Mapped[str | None] = mapped_column(sa.Text)
-    plan: Mapped[str] = mapped_column(String(255), server_default=sa.text("'basic'::character varying"))
-    status: Mapped[str] = mapped_column(String(255), server_default=sa.text("'normal'::character varying"))
-    custom_config: Mapped[str | None] = mapped_column(sa.Text)
-    created_at: Mapped[datetime] = mapped_column(DateTime, server_default=func.current_timestamp(), nullable=False)
-    updated_at: Mapped[datetime] = mapped_column(DateTime, server_default=func.current_timestamp())
+    encrypt_public_key: Mapped[str | None] = mapped_column(sa.Text, default=None)
+    plan: Mapped[str] = mapped_column(
+        String(255), server_default=sa.text("'basic'::character varying"), default="basic"
+    )
+    status: Mapped[str] = mapped_column(
+        String(255), server_default=sa.text("'normal'::character varying"), default="normal"
+    )
+    custom_config: Mapped[str | None] = mapped_column(sa.Text, default=None)
+    created_at: Mapped[datetime] = mapped_column(
+        DateTime, server_default=func.current_timestamp(), nullable=False, init=False
+    )
+    updated_at: Mapped[datetime] = mapped_column(DateTime, server_default=func.current_timestamp(), init=False)
 
     def get_accounts(self) -> list[Account]:
         return list(
@@ -257,7 +270,7 @@ class Tenant(Base):
         self.custom_config = json.dumps(value)
 
 
-class TenantAccountJoin(Base):
+class TenantAccountJoin(TypeBase):
     __tablename__ = "tenant_account_joins"
     __table_args__ = (
         sa.PrimaryKeyConstraint("id", name="tenant_account_join_pkey"),
@@ -266,17 +279,21 @@ class TenantAccountJoin(Base):
         sa.UniqueConstraint("tenant_id", "account_id", name="unique_tenant_account_join"),
     )
 
-    id: Mapped[str] = mapped_column(StringUUID, server_default=sa.text("uuid_generate_v4()"))
+    id: Mapped[str] = mapped_column(StringUUID, server_default=sa.text("uuid_generate_v4()"), init=False)
     tenant_id: Mapped[str] = mapped_column(StringUUID)
     account_id: Mapped[str] = mapped_column(StringUUID)
-    current: Mapped[bool] = mapped_column(sa.Boolean, server_default=sa.text("false"))
-    role: Mapped[str] = mapped_column(String(16), server_default="normal")
-    invited_by: Mapped[str | None] = mapped_column(StringUUID)
-    created_at: Mapped[datetime] = mapped_column(DateTime, server_default=func.current_timestamp())
-    updated_at: Mapped[datetime] = mapped_column(DateTime, server_default=func.current_timestamp())
+    current: Mapped[bool] = mapped_column(sa.Boolean, server_default=sa.text("false"), default=False)
+    role: Mapped[str] = mapped_column(String(16), server_default="normal", default="normal")
+    invited_by: Mapped[str | None] = mapped_column(StringUUID, nullable=True, default=None)
+    created_at: Mapped[datetime] = mapped_column(
+        DateTime, server_default=func.current_timestamp(), nullable=False, init=False
+    )
+    updated_at: Mapped[datetime] = mapped_column(
+        DateTime, server_default=func.current_timestamp(), nullable=False, init=False
+    )
 
 
-class AccountIntegrate(Base):
+class AccountIntegrate(TypeBase):
     __tablename__ = "account_integrates"
     __table_args__ = (
         sa.PrimaryKeyConstraint("id", name="account_integrate_pkey"),
@@ -284,16 +301,20 @@ class AccountIntegrate(Base):
         sa.UniqueConstraint("provider", "open_id", name="unique_provider_open_id"),
     )
 
-    id: Mapped[str] = mapped_column(StringUUID, server_default=sa.text("uuid_generate_v4()"))
+    id: Mapped[str] = mapped_column(StringUUID, server_default=sa.text("uuid_generate_v4()"), init=False)
     account_id: Mapped[str] = mapped_column(StringUUID)
     provider: Mapped[str] = mapped_column(String(16))
     open_id: Mapped[str] = mapped_column(String(255))
     encrypted_token: Mapped[str] = mapped_column(String(255))
-    created_at: Mapped[datetime] = mapped_column(DateTime, server_default=func.current_timestamp())
-    updated_at: Mapped[datetime] = mapped_column(DateTime, server_default=func.current_timestamp())
+    created_at: Mapped[datetime] = mapped_column(
+        DateTime, server_default=func.current_timestamp(), nullable=False, init=False
+    )
+    updated_at: Mapped[datetime] = mapped_column(
+        DateTime, server_default=func.current_timestamp(), nullable=False, init=False
+    )
 
 
-class InvitationCode(Base):
+class InvitationCode(TypeBase):
     __tablename__ = "invitation_codes"
     __table_args__ = (
         sa.PrimaryKeyConstraint("id", name="invitation_code_pkey"),
@@ -301,18 +322,22 @@ class InvitationCode(Base):
         sa.Index("invitation_codes_code_idx", "code", "status"),
     )
 
-    id: Mapped[int] = mapped_column(sa.Integer)
+    id: Mapped[int] = mapped_column(sa.Integer, init=False)
     batch: Mapped[str] = mapped_column(String(255))
     code: Mapped[str] = mapped_column(String(32))
-    status: Mapped[str] = mapped_column(String(16), server_default=sa.text("'unused'::character varying"))
-    used_at: Mapped[datetime | None] = mapped_column(DateTime)
-    used_by_tenant_id: Mapped[str | None] = mapped_column(StringUUID)
-    used_by_account_id: Mapped[str | None] = mapped_column(StringUUID)
-    deprecated_at: Mapped[datetime | None] = mapped_column(DateTime, nullable=True)
-    created_at: Mapped[datetime] = mapped_column(DateTime, server_default=sa.text("CURRENT_TIMESTAMP(0)"))
+    status: Mapped[str] = mapped_column(
+        String(16), server_default=sa.text("'unused'::character varying"), default="unused"
+    )
+    used_at: Mapped[datetime | None] = mapped_column(DateTime, default=None)
+    used_by_tenant_id: Mapped[str | None] = mapped_column(StringUUID, default=None)
+    used_by_account_id: Mapped[str | None] = mapped_column(StringUUID, default=None)
+    deprecated_at: Mapped[datetime | None] = mapped_column(DateTime, nullable=True, default=None)
+    created_at: Mapped[datetime] = mapped_column(
+        DateTime, server_default=sa.text("CURRENT_TIMESTAMP(0)"), nullable=False, init=False
+    )
 
 
-class TenantPluginPermission(Base):
+class TenantPluginPermission(TypeBase):
     class InstallPermission(enum.StrEnum):
         EVERYONE = "everyone"
         ADMINS = "admins"
@@ -329,13 +354,17 @@ class TenantPluginPermission(Base):
         sa.UniqueConstraint("tenant_id", name="unique_tenant_plugin"),
     )
 
-    id: Mapped[str] = mapped_column(StringUUID, server_default=sa.text("uuid_generate_v4()"))
+    id: Mapped[str] = mapped_column(StringUUID, server_default=sa.text("uuid_generate_v4()"), init=False)
     tenant_id: Mapped[str] = mapped_column(StringUUID, nullable=False)
-    install_permission: Mapped[InstallPermission] = mapped_column(String(16), nullable=False, server_default="everyone")
-    debug_permission: Mapped[DebugPermission] = mapped_column(String(16), nullable=False, server_default="noone")
+    install_permission: Mapped[InstallPermission] = mapped_column(
+        String(16), nullable=False, server_default="everyone", default=InstallPermission.EVERYONE
+    )
+    debug_permission: Mapped[DebugPermission] = mapped_column(
+        String(16), nullable=False, server_default="noone", default=DebugPermission.NOBODY
+    )
 
 
-class TenantPluginAutoUpgradeStrategy(Base):
+class TenantPluginAutoUpgradeStrategy(TypeBase):
     class StrategySetting(enum.StrEnum):
         DISABLED = "disabled"
         FIX_ONLY = "fix_only"
@@ -352,12 +381,20 @@ class TenantPluginAutoUpgradeStrategy(Base):
         sa.UniqueConstraint("tenant_id", name="unique_tenant_plugin_auto_upgrade_strategy"),
     )
 
-    id: Mapped[str] = mapped_column(StringUUID, server_default=sa.text("uuid_generate_v4()"))
+    id: Mapped[str] = mapped_column(StringUUID, server_default=sa.text("uuid_generate_v4()"), init=False)
     tenant_id: Mapped[str] = mapped_column(StringUUID, nullable=False)
-    strategy_setting: Mapped[StrategySetting] = mapped_column(String(16), nullable=False, server_default="fix_only")
-    upgrade_time_of_day: Mapped[int] = mapped_column(sa.Integer, nullable=False, default=0)  # seconds of the day
-    upgrade_mode: Mapped[UpgradeMode] = mapped_column(String(16), nullable=False, server_default="exclude")
-    exclude_plugins: Mapped[list[str]] = mapped_column(sa.ARRAY(String(255)), nullable=False)  # plugin_id (author/name)
-    include_plugins: Mapped[list[str]] = mapped_column(sa.ARRAY(String(255)), nullable=False)  # plugin_id (author/name)
-    created_at: Mapped[datetime] = mapped_column(DateTime, nullable=False, server_default=func.current_timestamp())
-    updated_at: Mapped[datetime] = mapped_column(DateTime, nullable=False, server_default=func.current_timestamp())
+    strategy_setting: Mapped[StrategySetting] = mapped_column(
+        String(16), nullable=False, server_default="fix_only", default=StrategySetting.FIX_ONLY
+    )
+    upgrade_mode: Mapped[UpgradeMode] = mapped_column(
+        String(16), nullable=False, server_default="exclude", default=UpgradeMode.EXCLUDE
+    )
+    exclude_plugins: Mapped[list[str]] = mapped_column(sa.ARRAY(String(255)), nullable=False, default_factory=list)
+    include_plugins: Mapped[list[str]] = mapped_column(sa.ARRAY(String(255)), nullable=False, default_factory=list)
+    upgrade_time_of_day: Mapped[int] = mapped_column(sa.Integer, nullable=False, default=0)
+    created_at: Mapped[datetime] = mapped_column(
+        DateTime, nullable=False, server_default=func.current_timestamp(), init=False
+    )
+    updated_at: Mapped[datetime] = mapped_column(
+        DateTime, nullable=False, server_default=func.current_timestamp(), init=False
+    )
diff --git a/api/services/account_service.py b/api/services/account_service.py
index 0e699d16da..77b8744020 100644
--- a/api/services/account_service.py
+++ b/api/services/account_service.py
@@ -246,10 +246,8 @@ class AccountService:
                 )
             )
 
-        account = Account()
-        account.email = email
-        account.name = name
-
+        password_to_set = None
+        salt_to_set = None
         if password:
             valid_password(password)
 
@@ -261,14 +259,18 @@ class AccountService:
             password_hashed = hash_password(password, salt)
             base64_password_hashed = base64.b64encode(password_hashed).decode()
 
-            account.password = base64_password_hashed
-            account.password_salt = base64_salt
+            password_to_set = base64_password_hashed
+            salt_to_set = base64_salt
 
-        account.interface_language = interface_language
-        account.interface_theme = interface_theme
-
-        # Set timezone based on language
-        account.timezone = language_timezone_mapping.get(interface_language, "UTC")
+        account = Account(
+            name=name,
+            email=email,
+            password=password_to_set,
+            password_salt=salt_to_set,
+            interface_language=interface_language,
+            interface_theme=interface_theme,
+            timezone=language_timezone_mapping.get(interface_language, "UTC"),
+        )
 
         db.session.add(account)
         db.session.commit()
diff --git a/api/tests/integration_tests/controllers/console/app/test_chat_message_permissions.py b/api/tests/integration_tests/controllers/console/app/test_chat_message_permissions.py
index da1524ff2e..4d1c1227bd 100644
--- a/api/tests/integration_tests/controllers/console/app/test_chat_message_permissions.py
+++ b/api/tests/integration_tests/controllers/console/app/test_chat_message_permissions.py
@@ -33,17 +33,19 @@ class TestChatMessageApiPermissions:
     @pytest.fixture
     def mock_account(self, monkeypatch: pytest.MonkeyPatch):
         """Create a mock Account for testing."""
-        account = Account()
-        account.id = str(uuid.uuid4())
-        account.name = "Test User"
-        account.email = "test@example.com"
+
+        account = Account(
+            name="Test User",
+            email="test@example.com",
+        )
         account.last_active_at = naive_utc_now()
         account.created_at = naive_utc_now()
         account.updated_at = naive_utc_now()
+        account.id = str(uuid.uuid4())
 
-        tenant = Tenant()
+        # Create mock tenant
+        tenant = Tenant(name="Test Tenant")
         tenant.id = str(uuid.uuid4())
-        tenant.name = "Test Tenant"
 
         mock_session_instance = mock.Mock()
 
diff --git a/api/tests/integration_tests/controllers/console/app/test_model_config_permissions.py b/api/tests/integration_tests/controllers/console/app/test_model_config_permissions.py
index c0fd56ef63..e158f26f3a 100644
--- a/api/tests/integration_tests/controllers/console/app/test_model_config_permissions.py
+++ b/api/tests/integration_tests/controllers/console/app/test_model_config_permissions.py
@@ -32,17 +32,16 @@ class TestModelConfigResourcePermissions:
     @pytest.fixture
     def mock_account(self, monkeypatch: pytest.MonkeyPatch):
         """Create a mock Account for testing."""
-        account = Account()
+
+        account = Account(name="Test User", email="test@example.com")
         account.id = str(uuid.uuid4())
-        account.name = "Test User"
-        account.email = "test@example.com"
         account.last_active_at = naive_utc_now()
         account.created_at = naive_utc_now()
         account.updated_at = naive_utc_now()
 
-        tenant = Tenant()
+        # Create mock tenant
+        tenant = Tenant(name="Test Tenant")
         tenant.id = str(uuid.uuid4())
-        tenant.name = "Test Tenant"
 
         mock_session_instance = mock.Mock()
 
diff --git a/api/tests/test_containers_integration_tests/services/test_account_service.py b/api/tests/test_containers_integration_tests/services/test_account_service.py
index c98406d845..0a2fb955ae 100644
--- a/api/tests/test_containers_integration_tests/services/test_account_service.py
+++ b/api/tests/test_containers_integration_tests/services/test_account_service.py
@@ -16,6 +16,7 @@ from services.errors.account import (
     AccountPasswordError,
     AccountRegisterError,
     CurrentPasswordIncorrectError,
+    TenantNotFoundError,
 )
 from services.errors.workspace import WorkSpaceNotAllowedCreateError, WorkspacesLimitExceededError
 
@@ -1414,7 +1415,7 @@ class TestTenantService:
         )
 
         # Try to get current tenant (should fail)
-        with pytest.raises(AttributeError):
+        with pytest.raises((AttributeError, TenantNotFoundError)):
             TenantService.get_current_tenant_by_account(account)
 
     def test_switch_tenant_success(self, db_session_with_containers, mock_external_service_dependencies):
diff --git a/api/tests/test_containers_integration_tests/services/test_workflow_service.py b/api/tests/test_containers_integration_tests/services/test_workflow_service.py
index 60150667ed..0dd3909ba7 100644
--- a/api/tests/test_containers_integration_tests/services/test_workflow_service.py
+++ b/api/tests/test_containers_integration_tests/services/test_workflow_service.py
@@ -44,27 +44,26 @@ class TestWorkflowService:
             Account: Created test account instance
         """
         fake = fake or Faker()
-        account = Account()
-        account.id = fake.uuid4()
-        account.email = fake.email()
-        account.name = fake.name()
-        account.avatar_url = fake.url()
-        account.tenant_id = fake.uuid4()
-        account.status = "active"
-        account.type = "normal"
-        account.role = "owner"
-        account.interface_language = "en-US"  # Set interface language for Site creation
+        account = Account(
+            email=fake.email(),
+            name=fake.name(),
+            avatar=fake.url(),
+            status="active",
+            interface_language="en-US",  # Set interface language for Site creation
+        )
         account.created_at = fake.date_time_this_year()
+        account.id = fake.uuid4()
         account.updated_at = account.created_at
 
         # Create a tenant for the account
         from models.account import Tenant
 
-        tenant = Tenant()
-        tenant.id = account.tenant_id
-        tenant.name = f"Test Tenant {fake.company()}"
-        tenant.plan = "basic"
-        tenant.status = "active"
+        tenant = Tenant(
+            name=f"Test Tenant {fake.company()}",
+            plan="basic",
+            status="active",
+        )
+        tenant.id = account.current_tenant_id
         tenant.created_at = fake.date_time_this_year()
         tenant.updated_at = tenant.created_at
 
@@ -91,20 +90,21 @@ class TestWorkflowService:
             App: Created test app instance
         """
         fake = fake or Faker()
-        app = App()
-        app.id = fake.uuid4()
-        app.tenant_id = fake.uuid4()
-        app.name = fake.company()
-        app.description = fake.text()
-        app.mode = AppMode.WORKFLOW
-        app.icon_type = "emoji"
-        app.icon = "🤖"
-        app.icon_background = "#FFEAD5"
-        app.enable_site = True
-        app.enable_api = True
-        app.created_by = fake.uuid4()
+        app = App(
+            id=fake.uuid4(),
+            tenant_id=fake.uuid4(),
+            name=fake.company(),
+            description=fake.text(),
+            mode=AppMode.WORKFLOW,
+            icon_type="emoji",
+            icon="🤖",
+            icon_background="#FFEAD5",
+            enable_site=True,
+            enable_api=True,
+            created_by=fake.uuid4(),
+            workflow_id=None,  # Will be set when workflow is created
+        )
         app.updated_by = app.created_by
-        app.workflow_id = None  # Will be set when workflow is created
 
         from extensions.ext_database import db
 
@@ -126,19 +126,20 @@ class TestWorkflowService:
             Workflow: Created test workflow instance
         """
         fake = fake or Faker()
-        workflow = Workflow()
-        workflow.id = fake.uuid4()
-        workflow.tenant_id = app.tenant_id
-        workflow.app_id = app.id
-        workflow.type = WorkflowType.WORKFLOW.value
-        workflow.version = Workflow.VERSION_DRAFT
-        workflow.graph = json.dumps({"nodes": [], "edges": []})
-        workflow.features = json.dumps({"features": []})
-        # unique_hash is a computed property based on graph and features
-        workflow.created_by = account.id
-        workflow.updated_by = account.id
-        workflow.environment_variables = []
-        workflow.conversation_variables = []
+        workflow = Workflow(
+            id=fake.uuid4(),
+            tenant_id=app.tenant_id,
+            app_id=app.id,
+            type=WorkflowType.WORKFLOW.value,
+            version=Workflow.VERSION_DRAFT,
+            graph=json.dumps({"nodes": [], "edges": []}),
+            features=json.dumps({"features": []}),
+            # unique_hash is a computed property based on graph and features
+            created_by=account.id,
+            updated_by=account.id,
+            environment_variables=[],
+            conversation_variables=[],
+        )
 
         from extensions.ext_database import db
 
diff --git a/api/tests/test_containers_integration_tests/tasks/test_delete_segment_from_index_task.py b/api/tests/test_containers_integration_tests/tasks/test_delete_segment_from_index_task.py
index 7af4f238be..94e9b76965 100644
--- a/api/tests/test_containers_integration_tests/tasks/test_delete_segment_from_index_task.py
+++ b/api/tests/test_containers_integration_tests/tasks/test_delete_segment_from_index_task.py
@@ -48,11 +48,8 @@ class TestDeleteSegmentFromIndexTask:
             Tenant: Created test tenant instance
         """
         fake = fake or Faker()
-        tenant = Tenant()
+        tenant = Tenant(name=f"Test Tenant {fake.company()}", plan="basic", status="active")
         tenant.id = fake.uuid4()
-        tenant.name = f"Test Tenant {fake.company()}"
-        tenant.plan = "basic"
-        tenant.status = "active"
         tenant.created_at = fake.date_time_this_year()
         tenant.updated_at = tenant.created_at
 
@@ -73,16 +70,14 @@ class TestDeleteSegmentFromIndexTask:
             Account: Created test account instance
         """
         fake = fake or Faker()
-        account = Account()
+        account = Account(
+            name=fake.name(),
+            email=fake.email(),
+            avatar=fake.url(),
+            status="active",
+            interface_language="en-US",
+        )
         account.id = fake.uuid4()
-        account.email = fake.email()
-        account.name = fake.name()
-        account.avatar_url = fake.url()
-        account.tenant_id = tenant.id
-        account.status = "active"
-        account.type = "normal"
-        account.role = "owner"
-        account.interface_language = "en-US"
         account.created_at = fake.date_time_this_year()
         account.updated_at = account.created_at
 
diff --git a/api/tests/test_containers_integration_tests/tasks/test_disable_segments_from_index_task.py b/api/tests/test_containers_integration_tests/tasks/test_disable_segments_from_index_task.py
index 5fdb8c617c..0b36e0914a 100644
--- a/api/tests/test_containers_integration_tests/tasks/test_disable_segments_from_index_task.py
+++ b/api/tests/test_containers_integration_tests/tasks/test_disable_segments_from_index_task.py
@@ -43,27 +43,30 @@ class TestDisableSegmentsFromIndexTask:
             Account: Created test account instance
         """
         fake = fake or Faker()
-        account = Account()
+        account = Account(
+            email=fake.email(),
+            name=fake.name(),
+            avatar=fake.url(),
+            status="active",
+            interface_language="en-US",
+        )
         account.id = fake.uuid4()
-        account.email = fake.email()
-        account.name = fake.name()
-        account.avatar_url = fake.url()
+        # monkey-patch attributes for test setup
         account.tenant_id = fake.uuid4()
-        account.status = "active"
         account.type = "normal"
         account.role = "owner"
-        account.interface_language = "en-US"
         account.created_at = fake.date_time_this_year()
         account.updated_at = account.created_at
 
         # Create a tenant for the account
         from models.account import Tenant
 
-        tenant = Tenant()
+        tenant = Tenant(
+            name=f"Test Tenant {fake.company()}",
+            plan="basic",
+            status="active",
+        )
         tenant.id = account.tenant_id
-        tenant.name = f"Test Tenant {fake.company()}"
-        tenant.plan = "basic"
-        tenant.status = "active"
         tenant.created_at = fake.date_time_this_year()
         tenant.updated_at = tenant.created_at
 
@@ -91,20 +94,21 @@ class TestDisableSegmentsFromIndexTask:
             Dataset: Created test dataset instance
         """
         fake = fake or Faker()
-        dataset = Dataset()
-        dataset.id = fake.uuid4()
-        dataset.tenant_id = account.tenant_id
-        dataset.name = f"Test Dataset {fake.word()}"
-        dataset.description = fake.text(max_nb_chars=200)
-        dataset.provider = "vendor"
-        dataset.permission = "only_me"
-        dataset.data_source_type = "upload_file"
-        dataset.indexing_technique = "high_quality"
-        dataset.created_by = account.id
-        dataset.updated_by = account.id
-        dataset.embedding_model = "text-embedding-ada-002"
-        dataset.embedding_model_provider = "openai"
-        dataset.built_in_field_enabled = False
+        dataset = Dataset(
+            id=fake.uuid4(),
+            tenant_id=account.tenant_id,
+            name=f"Test Dataset {fake.word()}",
+            description=fake.text(max_nb_chars=200),
+            provider="vendor",
+            permission="only_me",
+            data_source_type="upload_file",
+            indexing_technique="high_quality",
+            created_by=account.id,
+            updated_by=account.id,
+            embedding_model="text-embedding-ada-002",
+            embedding_model_provider="openai",
+            built_in_field_enabled=False,
+        )
 
         from extensions.ext_database import db
 
@@ -128,6 +132,7 @@ class TestDisableSegmentsFromIndexTask:
         """
         fake = fake or Faker()
         document = DatasetDocument()
+
         document.id = fake.uuid4()
         document.tenant_id = dataset.tenant_id
         document.dataset_id = dataset.id
@@ -153,7 +158,6 @@ class TestDisableSegmentsFromIndexTask:
         document.archived = False
         document.doc_form = "text_model"  # Use text_model form for testing
         document.doc_language = "en"
-
         from extensions.ext_database import db
 
         db.session.add(document)
diff --git a/api/tests/test_containers_integration_tests/tasks/test_mail_invite_member_task.py b/api/tests/test_containers_integration_tests/tasks/test_mail_invite_member_task.py
index 8fef87b317..ead7757c13 100644
--- a/api/tests/test_containers_integration_tests/tasks/test_mail_invite_member_task.py
+++ b/api/tests/test_containers_integration_tests/tasks/test_mail_invite_member_task.py
@@ -96,9 +96,9 @@ class TestMailInviteMemberTask:
             password=fake.password(),
             interface_language="en-US",
             status=AccountStatus.ACTIVE.value,
-            created_at=datetime.now(UTC),
-            updated_at=datetime.now(UTC),
         )
+        account.created_at = datetime.now(UTC)
+        account.updated_at = datetime.now(UTC)
         db_session_with_containers.add(account)
         db_session_with_containers.commit()
         db_session_with_containers.refresh(account)
@@ -106,9 +106,9 @@ class TestMailInviteMemberTask:
         # Create tenant
         tenant = Tenant(
             name=fake.company(),
-            created_at=datetime.now(UTC),
-            updated_at=datetime.now(UTC),
         )
+        tenant.created_at = datetime.now(UTC)
+        tenant.updated_at = datetime.now(UTC)
         db_session_with_containers.add(tenant)
         db_session_with_containers.commit()
         db_session_with_containers.refresh(tenant)
@@ -118,8 +118,8 @@ class TestMailInviteMemberTask:
             tenant_id=tenant.id,
             account_id=account.id,
             role=TenantAccountRole.OWNER.value,
-            created_at=datetime.now(UTC),
         )
+        tenant_join.created_at = datetime.now(UTC)
         db_session_with_containers.add(tenant_join)
         db_session_with_containers.commit()
 
@@ -164,9 +164,10 @@ class TestMailInviteMemberTask:
             password="",
             interface_language="en-US",
             status=AccountStatus.PENDING.value,
-            created_at=datetime.now(UTC),
-            updated_at=datetime.now(UTC),
         )
+
+        account.created_at = datetime.now(UTC)
+        account.updated_at = datetime.now(UTC)
         db_session_with_containers.add(account)
         db_session_with_containers.commit()
         db_session_with_containers.refresh(account)
@@ -176,8 +177,8 @@ class TestMailInviteMemberTask:
             tenant_id=tenant.id,
             account_id=account.id,
             role=TenantAccountRole.NORMAL.value,
-            created_at=datetime.now(UTC),
         )
+        tenant_join.created_at = datetime.now(UTC)
         db_session_with_containers.add(tenant_join)
         db_session_with_containers.commit()
 
diff --git a/api/tests/unit_tests/libs/test_helper.py b/api/tests/unit_tests/libs/test_helper.py
index b7701055f5..85789bfa7e 100644
--- a/api/tests/unit_tests/libs/test_helper.py
+++ b/api/tests/unit_tests/libs/test_helper.py
@@ -11,7 +11,7 @@ class TestExtractTenantId:
     def test_extract_tenant_id_from_account_with_tenant(self):
         """Test extracting tenant_id from Account with current_tenant_id."""
         # Create a mock Account object
-        account = Account()
+        account = Account(name="test", email="test@example.com")
         # Mock the current_tenant_id property
         account._current_tenant = type("MockTenant", (), {"id": "account-tenant-123"})()
 
@@ -21,7 +21,7 @@ class TestExtractTenantId:
     def test_extract_tenant_id_from_account_without_tenant(self):
         """Test extracting tenant_id from Account without current_tenant_id."""
         # Create a mock Account object
-        account = Account()
+        account = Account(name="test", email="test@example.com")
         account._current_tenant = None
 
         tenant_id = extract_tenant_id(account)
diff --git a/api/tests/unit_tests/repositories/workflow_node_execution/test_sqlalchemy_repository.py b/api/tests/unit_tests/repositories/workflow_node_execution/test_sqlalchemy_repository.py
index fadd1ee88f..28b339fe85 100644
--- a/api/tests/unit_tests/repositories/workflow_node_execution/test_sqlalchemy_repository.py
+++ b/api/tests/unit_tests/repositories/workflow_node_execution/test_sqlalchemy_repository.py
@@ -59,12 +59,11 @@ def session():
 @pytest.fixture
 def mock_user():
     """Create a user instance for testing."""
-    user = Account()
+    user = Account(name="test", email="test@example.com")
     user.id = "test-user-id"
 
-    tenant = Tenant()
+    tenant = Tenant(name="Test Workspace")
     tenant.id = "test-tenant"
-    tenant.name = "Test Workspace"
     user._current_tenant = MagicMock()
     user._current_tenant.id = "test-tenant"
 
diff --git a/api/tests/unit_tests/services/workflow/test_workflow_draft_variable_service.py b/api/tests/unit_tests/services/workflow/test_workflow_draft_variable_service.py
index 7e324ca4db..66361f26e0 100644
--- a/api/tests/unit_tests/services/workflow/test_workflow_draft_variable_service.py
+++ b/api/tests/unit_tests/services/workflow/test_workflow_draft_variable_service.py
@@ -47,7 +47,8 @@ class TestDraftVariableSaver:
 
     def test__should_variable_be_visible(self):
         mock_session = MagicMock(spec=Session)
-        mock_user = Account(id=str(uuid.uuid4()))
+        mock_user = Account(name="test", email="test@example.com")
+        mock_user.id = str(uuid.uuid4())
         test_app_id = self._get_test_app_id()
         saver = DraftVariableSaver(
             session=mock_session,