diff --git a/src/alpine_bits_python/db.py b/src/alpine_bits_python/db.py
index e7964b8..1bca0ce 100644
--- a/src/alpine_bits_python/db.py
+++ b/src/alpine_bits_python/db.py
@@ -1,11 +1,26 @@
 import asyncio
 import hashlib
 import os
-from typing import Any, AsyncGenerator, Callable, TypeVar
+from collections.abc import AsyncGenerator, Callable
+from typing import TypeVar
 
-from sqlalchemy import Boolean, Column, Date, DateTime, ForeignKey, Integer, String, JSON
+from sqlalchemy import (
+    JSON,
+    Boolean,
+    Column,
+    Date,
+    DateTime,
+    ForeignKey,
+    Integer,
+    String,
+)
 from sqlalchemy.exc import DBAPIError
-from sqlalchemy.ext.asyncio import AsyncEngine, AsyncSession, create_async_engine, async_sessionmaker
+from sqlalchemy.ext.asyncio import (
+    AsyncEngine,
+    AsyncSession,
+    async_sessionmaker,
+    create_async_engine,
+)
 from sqlalchemy.orm import declarative_base, relationship
 
 from .logging_config import get_logger
@@ -95,9 +110,7 @@ def create_database_engine(config=None, echo=False) -> AsyncEngine:
     # Create engine with connect_args to set search_path for PostgreSQL
     connect_args = {}
     if schema_name and "postgresql" in database_url:
-        connect_args = {
-            "server_settings": {"search_path": f"{schema_name},public"}
-        }
+        connect_args = {"server_settings": {"search_path": f"{schema_name},public"}}
         _LOGGER.info("Setting PostgreSQL search_path to: %s,public", schema_name)
 
     return create_async_engine(database_url, echo=echo, connect_args=connect_args)
@@ -120,13 +133,12 @@ class ResilientAsyncSession:
         Args:
             async_sessionmaker_: Factory for creating async sessions
             engine: The SQLAlchemy async engine for connection recovery
+
         """
         self.async_sessionmaker = async_sessionmaker_
         self.engine = engine
 
-    async def execute_with_retry(
-        self, func: Callable[..., T], *args, **kwargs
-    ) -> T:
+    async def execute_with_retry(self, func: Callable[..., T], *args, **kwargs) -> T:
         """Execute a function with automatic retry on connection errors.
 
         Args:
@@ -139,6 +151,7 @@ class ResilientAsyncSession:
 
         Raises:
             The original exception if all retries are exhausted
+
         """
         last_error = None
 
@@ -169,7 +182,7 @@ class ResilientAsyncSession:
 
                     # Wait before retry (exponential backoff)
                     if attempt < MAX_RETRIES - 1:
-                        wait_time = RETRY_DELAY * (2 ** attempt)
+                        wait_time = RETRY_DELAY * (2**attempt)
                         await asyncio.sleep(wait_time)
                 else:
                     # Not a connection-related error, re-raise immediately
@@ -201,6 +214,7 @@ class SessionMaker:
 
         Args:
             async_sessionmaker_: SQLAlchemy async_sessionmaker factory
+
         """
         self.async_sessionmaker = async_sessionmaker_
 
@@ -210,13 +224,14 @@ class SessionMaker:
         Returns:
             A new AsyncSession instance ready for use. Caller is responsible
             for managing the session lifecycle (closing when done).
+
         """
         return self.async_sessionmaker()
 
 
 async def get_resilient_session(
     resilient_session: "ResilientAsyncSession",
-) -> AsyncGenerator[AsyncSession, None]:
+) -> AsyncGenerator[AsyncSession]:
     """Dependency for FastAPI that provides a resilient async session.
 
     This generator creates a new session with automatic retry capability
@@ -227,6 +242,7 @@ async def get_resilient_session(
 
     Yields:
         AsyncSession instance for database operations
+
     """
     async with resilient_session.async_sessionmaker() as session:
         yield session
@@ -356,10 +372,19 @@ class Reservation(Base):
 
 # Table for tracking acknowledged requests by client
 class AckedRequest(Base):
+    """Tracks which Reservations the Client has already seen via ReadAction.
+
+    Clients can report successfull transfers via ReportNotifAction. This gets stored in this table.
+    This prevents re-sending the same reservation multiple times to the client.
+
+    """
+
     __tablename__ = "acked_requests"
     id = Column(Integer, primary_key=True)
     client_id = Column(String, index=True)
-    username = Column(String, index=True, nullable=True)  # Username of the client making the request
+    username = Column(
+        String, index=True, nullable=True
+    )  # Username of the client making the request
     unique_id = Column(
         String, index=True
     )  # Should match Reservation.form_id or another unique field
@@ -371,10 +396,13 @@ class Conversion(Base):
 
     Represents a single reservation event from the PMS XML with all its metadata.
     Each row links to one reservation from the PMS system. A reservation can have
-    multiple room reservations (stored in RoomReservation table).
+    multiple room reservations (stored in ConversionRoom table).
 
     Linked to reservations via advertising tracking data (fbclid, gclid, etc)
     stored in advertisingCampagne field.
+    The tracking data transferered by the PMS is however somewhat shorter.
+    We therefore also need to match on guest name/email and other metadata.
+
     """
 
     __tablename__ = "conversions"
@@ -423,12 +451,12 @@ class Conversion(Base):
     reservation = relationship("Reservation", backref="conversions")
     customer = relationship("Customer", backref="conversions")
     hashed_customer = relationship("HashedCustomer", backref="conversions")
-    room_reservations = relationship(
-        "RoomReservation", back_populates="conversion", cascade="all, delete-orphan"
+    conversion_rooms = relationship(
+        "ConversionRoom", back_populates="conversion", cascade="all, delete-orphan"
     )
 
 
-class RoomReservation(Base):
+class ConversionRoom(Base):
     """Room reservation data from hotel PMS.
 
     Represents a single room reservation within a conversion/PMS reservation.
@@ -438,7 +466,7 @@ class RoomReservation(Base):
     for efficient querying.
     """
 
-    __tablename__ = "room_reservations"
+    __tablename__ = "conversion_rooms"
     id = Column(Integer, primary_key=True)
 
     # Link to the parent conversion/PMS reservation
@@ -478,4 +506,4 @@ class RoomReservation(Base):
     updated_at = Column(DateTime(timezone=True))  # When this record was last updated
 
     # Relationships
-    conversion = relationship("Conversion", back_populates="room_reservations")
+    conversion = relationship("Conversion", back_populates="conversion_rooms")