diff --git a/CLAUDE.md b/CLAUDE.md
new file mode 100644
index 0000000..737d084
--- /dev/null
+++ b/CLAUDE.md
@@ -0,0 +1,86 @@
+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Project Overview
+
+F1tness Parser is a FastAPI-based web application that parses fitness training data from two note formats:
+- **Obsidian Notes**: Markdown tables with `# DD.MM.YYYY (trainer-session)` headers
+- **Apple Notes**: Bold markdown tables with `**DD.MM.YYYY (trainer-session)**` headers
+
+The application uses a layered architecture with parsers, models, services, and API endpoints.
+
+## Development Commands
+
+### Local Development
+```bash
+# Start development server
+python run.py
+
+# Start with Docker Compose (includes PostgreSQL)
+docker compose up --build
+
+# Run migrations manually
+python -c "from migrations.runner import MigrationRunner; from app.config import settings; import asyncio; asyncio.run(MigrationRunner(settings.get_postgres_database_url()).run_migrations())"
+```
+
+### Testing
+```bash
+# Run tests
+pytest
+
+# Run specific test file
+pytest tests/test_core/test_obsidian_parser.py
+
+# Run tests with coverage
+pytest --cov=app
+```
+
+### Type Checking
+```bash
+# Run type checking
+mypy app/
+```
+
+## Architecture
+
+### Core Components
+
+**Parser Architecture**: The system uses a base parser class (`app/core/parsers/base.py`) with format-specific implementations:
+- `ObsidianNotesParser` - handles Obsidian markdown format
+- `AppleNotesParser` - handles Apple notes format
+- Each parser includes exercise name mapping for normalization
+
+**Data Models**: Located in `app/core/dto/training.py`:
+- `Training` - represents a workout session
+- `Exercise` - individual exercise with multiple approaches
+- `Approach` - single set with weight and reps
+
+**API Structure**:
+- `/api/v1/` - REST API endpoints
+- `/app/` - Web interface endpoints
+- Static files served from `app/static/`
+- Templates in `app/templates/`
+
+### Database
+
+The application supports both SQLite (default) and PostgreSQL. Database migrations are handled by a custom migration runner in `migrations/runner.py` that reads SQL files from `migrations/sql/`.
+
+Configuration is managed through `app/config.py` using Pydantic settings with `.env` file support.
+
+### Key Files
+
+- `app/main.py` - FastAPI application setup with lifespan management
+- `app/config.py` - Application configuration and database settings
+- `run.py` - Development server entry point
+- `migrations/runner.py` - Custom database migration system
+- `compose.yaml` - Docker Compose setup with PostgreSQL
+
+## Environment Setup
+
+Copy `.env.example` to `.env` and configure:
+- PostgreSQL connection settings
+- Debug mode
+- PYTHONPATH (for Docker)
+
+The application will run database migrations automatically on startup through the FastAPI lifespan event.
diff --git a/app/api/v1/endpoints/trainings.py b/app/api/v1/endpoints/trainings.py
index 0c168c0..07b8d79 100644
--- a/app/api/v1/endpoints/trainings.py
+++ b/app/api/v1/endpoints/trainings.py
@@ -1,8 +1,11 @@
 from datetime import datetime
+import logging
 from fastapi import APIRouter
 
 from app.core.database.connection import SQLiteExecutor
+from app.core.database.models.approach import ApproachOps
 from app.core.database.models.training import TrainingOps
+from app.core.database.models.exercise import ExerciseOps
 from app.core.dto.training import TrainingDTO
 from app.core.parsers.obsidian import parse_training_data
 
@@ -30,3 +33,30 @@ async def get_trainings_list():
     training_executor = TrainingOps(sqllite_executor)
     results = await training_executor.list()
     return {"status": "ok", "create_id": results}
+
+
+@router.delete("/test/delete/")
+async def delete_by_ids():
+    training_executor = TrainingOps(sqllite_executor)
+    await training_executor.delete(list_of_ids=[4,5,6])
+    return {"status": "ok"}
+
+
+@router.post("/test/create/")
+async def create_full_training():
+    training_executor = TrainingOps(sqllite_executor)
+    exercise_executor = ExerciseOps(sqllite_executor)
+    approach_executor = ApproachOps(sqllite_executor)
+    sample_training_data: TrainingDTO = parse_training_data()[-1]
+    logging.info(sample_training_data)
+    training_id: int = await training_executor.create(sample_training_data)
+    if sample_training_data.exercises:
+        for exercise in sample_training_data.exercises:
+            exercise.training_id = training_id
+            exercise_id: int = await exercise_executor.create(exercise)
+            if exercise.approaches:
+                for approach in exercise.approaches:
+                    approach.exercise_id = exercise_id
+                    await approach_executor.create(approach)
+
+    return {"status": "ok"}
diff --git a/app/core/database/models/approach.py b/app/core/database/models/approach.py
new file mode 100644
index 0000000..3cfcb19
--- /dev/null
+++ b/app/core/database/models/approach.py
@@ -0,0 +1,26 @@
+from typing import List, Dict, Any
+from app.core.database.connection import SQLiteExecutor
+from app.core.dto.training import ApproachDTO
+
+
+class ApproachOps:
+    TABLE_NAME: str = "approaches"
+
+    def __init__(self, executor: SQLiteExecutor) -> None:
+        self._executor = executor
+
+    async def create(self, approach: ApproachDTO) -> int:
+        query = f"INSERT INTO {self.TABLE_NAME} (exercise_id, weight, reps) VALUES (?, ?, ?)"
+        return await self._executor.execute_mod_query(
+            query, (approach.exercise_id, approach.weight, approach.reps)
+        )
+
+    async def list(self) -> List[Dict[str, Any]]:
+        query = f"SELECT * FROM {self.TABLE_NAME}"
+        return await self._executor.execute_query(query)
+
+    async def delete(self, list_of_ids: List[int]) -> None:
+        placeholders: str = ",".join("?" * len(list_of_ids))
+        query = f"DELETE FROM {self.TABLE_NAME} WHERE id IN ({placeholders})"
+        await self._executor.execute_mod_query(query, tuple(list_of_ids))
+        return None
diff --git a/app/core/database/models/exercise.py b/app/core/database/models/exercise.py
new file mode 100644
index 0000000..a453799
--- /dev/null
+++ b/app/core/database/models/exercise.py
@@ -0,0 +1,26 @@
+from typing import List, Dict, Any
+from app.core.database.connection import SQLiteExecutor
+from app.core.dto.training import ExerciseDTO
+
+
+class ExerciseOps:
+    TABLE_NAME: str = "exercises"
+
+    def __init__(self, executor: SQLiteExecutor) -> None:
+        self._executor = executor
+
+    async def create(self, exercise: ExerciseDTO) -> int:
+        query = f"INSERT INTO {self.TABLE_NAME} (training_id, name, splitted_weight) VALUES (?, ?, ?)"
+        return await self._executor.execute_mod_query(
+            query, (exercise.training_id, exercise.name, exercise.splitted_weight)
+        )
+
+    async def list(self) -> List[Dict[str, Any]]:
+        query = f"SELECT * FROM {self.TABLE_NAME}"
+        return await self._executor.execute_query(query)
+
+    async def delete(self, list_of_ids: List[int]) -> None:
+        placeholders: str = ",".join("?" * len(list_of_ids))
+        query = f"DELETE FROM {self.TABLE_NAME} WHERE id IN ({placeholders})"
+        await self._executor.execute_mod_query(query, tuple(list_of_ids))
+        return None
diff --git a/app/core/database/models/training.py b/app/core/database/models/training.py
index 80a7d7a..5ea30c3 100644
--- a/app/core/database/models/training.py
+++ b/app/core/database/models/training.py
@@ -4,15 +4,23 @@ from app.core.dto.training import TrainingDTO
 
 
 class TrainingOps:
+    TABLE_NAME: str = "trainings"
+
     def __init__(self, executor: SQLiteExecutor) -> None:
         self._executor = executor
 
     async def create(self, training: TrainingDTO) -> int:
-        query = "INSERT INTO trainings (date, trainer) VALUES (?, ?)"
+        query = f"INSERT INTO {self.TABLE_NAME} (date, trainer) VALUES (?, ?)"
         return await self._executor.execute_mod_query(
             query, (training.date, training.trainer)
         )
 
     async def list(self) -> List[Dict[str, Any]]:
-        query = "SELECT * FROM trainings"
+        query = f"SELECT * FROM {self.TABLE_NAME}"
         return await self._executor.execute_query(query)
+
+    async def delete(self, list_of_ids: List[int]) -> None:
+        placeholders: str = ",".join("?" * len(list_of_ids))
+        query = f"DELETE FROM {self.TABLE_NAME} WHERE id IN ({placeholders})"
+        await self._executor.execute_mod_query(query, tuple(list_of_ids))
+        return None
diff --git a/app/core/dto/training.py b/app/core/dto/training.py
index c853add..6900456 100644
--- a/app/core/dto/training.py
+++ b/app/core/dto/training.py
@@ -22,4 +22,4 @@ class TrainingDTO(BaseModel):
     id: Optional[int] = None
     date: date
     trainer: Optional[str] = None
-    exercises: Optional[List[ExerciseDTO]] = None
+    exercises: Optional[List[ApproachDTO]] = None