diff --git a/src/backend/common/database/database_base.py b/src/backend/common/database/database_base.py
index fe67c556c..92e13cb40 100644
--- a/src/backend/common/database/database_base.py
+++ b/src/backend/common/database/database_base.py
@@ -1,5 +1,8 @@
+
 """Database base class for managing database operations."""
 
+# pylint: disable=unnecessary-pass
+
 from abc import ABC, abstractmethod
 from typing import Any, Dict, List, Optional, Type
 
@@ -21,25 +24,30 @@ class DatabaseBase(ABC):
     @abstractmethod
     async def initialize(self) -> None:
         """Initialize the database client and create containers if needed."""
+        pass
 
     @abstractmethod
     async def close(self) -> None:
         """Close database connection."""
+        pass
 
     # Core CRUD Operations
     @abstractmethod
     async def add_item(self, item: BaseDataModel) -> None:
         """Add an item to the database."""
+        pass
 
     @abstractmethod
     async def update_item(self, item: BaseDataModel) -> None:
         """Update an item in the database."""
+        pass
 
     @abstractmethod
     async def get_item_by_id(
         self, item_id: str, partition_key: str, model_class: Type[BaseDataModel]
     ) -> Optional[BaseDataModel]:
         """Retrieve an item by its ID and partition key."""
+        pass
 
     @abstractmethod
     async def query_items(
@@ -49,92 +57,113 @@ async def query_items(
         model_class: Type[BaseDataModel],
     ) -> List[BaseDataModel]:
         """Query items from the database and return a list of model instances."""
+        pass
 
     @abstractmethod
     async def delete_item(self, item_id: str, partition_key: str) -> None:
         """Delete an item from the database."""
+        pass
 
     # Plan Operations
     @abstractmethod
     async def add_plan(self, plan: Plan) -> None:
         """Add a plan to the database."""
+        pass
 
     @abstractmethod
     async def update_plan(self, plan: Plan) -> None:
         """Update a plan in the database."""
+        pass
 
     @abstractmethod
     async def get_plan_by_plan_id(self, plan_id: str) -> Optional[Plan]:
         """Retrieve a plan by plan_id."""
+        pass
 
     @abstractmethod
     async def get_plan(self, plan_id: str) -> Optional[Plan]:
         """Retrieve a plan by plan_id."""
+        pass
 
     @abstractmethod
     async def get_all_plans(self) -> List[Plan]:
         """Retrieve all plans for the user."""
+        pass
 
     @abstractmethod
     async def get_all_plans_by_team_id(self, team_id: str) -> List[Plan]:
         """Retrieve all plans for a specific team."""
+        pass
 
     @abstractmethod
     async def get_all_plans_by_team_id_status(
         self, user_id: str, team_id: str, status: str
     ) -> List[Plan]:
         """Retrieve all plans for a specific team."""
+        pass
 
     # Step Operations
     @abstractmethod
     async def add_step(self, step: Step) -> None:
         """Add a step to the database."""
+        pass
 
     @abstractmethod
     async def update_step(self, step: Step) -> None:
         """Update a step in the database."""
+        pass
 
     @abstractmethod
     async def get_steps_by_plan(self, plan_id: str) -> List[Step]:
         """Retrieve all steps for a plan."""
+        pass
 
     @abstractmethod
     async def get_step(self, step_id: str, session_id: str) -> Optional[Step]:
         """Retrieve a step by step_id and session_id."""
+        pass
 
     # Team Operations
     @abstractmethod
     async def add_team(self, team: TeamConfiguration) -> None:
         """Add a team configuration to the database."""
+        pass
 
     @abstractmethod
     async def update_team(self, team: TeamConfiguration) -> None:
         """Update a team configuration in the database."""
+        pass
 
     @abstractmethod
     async def get_team(self, team_id: str) -> Optional[TeamConfiguration]:
         """Retrieve a team configuration by team_id."""
+        pass
 
     @abstractmethod
     async def get_team_by_id(self, team_id: str) -> Optional[TeamConfiguration]:
         """Retrieve a team configuration by internal id."""
+        pass
 
     @abstractmethod
     async def get_all_teams(self) -> List[TeamConfiguration]:
         """Retrieve all team configurations for the given user."""
+        pass
 
     @abstractmethod
     async def delete_team(self, team_id: str) -> bool:
         """Delete a team configuration by team_id and return True if deleted."""
+        pass
 
     # Data Management Operations
     @abstractmethod
     async def get_data_by_type(self, data_type: str) -> List[BaseDataModel]:
         """Retrieve all data of a specific type."""
+        pass
 
     @abstractmethod
     async def get_all_items(self) -> List[Dict[str, Any]]:
         """Retrieve all items as dictionaries."""
+        pass
 
     # Context Manager Support
     async def __aenter__(self):
@@ -149,14 +178,17 @@ async def __aexit__(self, exc_type, exc, tb):
     @abstractmethod
     async def get_steps_for_plan(self, plan_id: str) -> List[Step]:
         """Convenience method aliasing get_steps_by_plan for compatibility."""
+        pass
 
     @abstractmethod
     async def get_current_team(self, user_id: str) -> Optional[UserCurrentTeam]:
         """Retrieve the current team for a user."""
+        pass
 
     @abstractmethod
     async def delete_current_team(self, user_id: str) -> Optional[UserCurrentTeam]:
         """Retrieve the current team for a user."""
+        pass
 
     @abstractmethod
     async def set_current_team(self, current_team: UserCurrentTeam) -> None:
@@ -165,22 +197,27 @@ async def set_current_team(self, current_team: UserCurrentTeam) -> None:
     @abstractmethod
     async def update_current_team(self, current_team: UserCurrentTeam) -> None:
         """Update the current team for a user."""
+        pass
 
     @abstractmethod
     async def delete_plan_by_plan_id(self, plan_id: str) -> bool:
         """Retrieve the current team for a user."""
+        pass
 
     @abstractmethod
     async def add_mplan(self, mplan: messages.MPlan) -> None:
         """Add a team configuration to the database."""
+        pass
 
     @abstractmethod
     async def update_mplan(self, mplan: messages.MPlan) -> None:
         """Update a team configuration in the database."""
+        pass
 
     @abstractmethod
     async def get_mplan(self, plan_id: str) -> Optional[messages.MPlan]:
         """Retrieve a mplan configuration by plan_id."""
+        pass
 
     @abstractmethod
     async def add_agent_message(self, message: AgentMessageData) -> None:
@@ -189,7 +226,9 @@ async def add_agent_message(self, message: AgentMessageData) -> None:
     @abstractmethod
     async def update_agent_message(self, message: AgentMessageData) -> None:
         """Update an agent message in the database."""
+        pass
 
     @abstractmethod
     async def get_agent_messages(self, plan_id: str) -> Optional[AgentMessageData]:
         """Retrieve an agent message by message_id."""
+        pass