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```python
# AI Dev Tool: FastAPI Pydantic v2 Micro-SaaS Boilerplate
# ======================================================

from fastapi import FastAPI, Depends
from pydantic import BaseModel
from typing import List, Optional
from sqlalchemy import create_engine, Column, Integer, String
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker, Session

# Initialize FastAPI App
app = FastAPI()

# Initialize Database Connection
SQLALCHEMY_DATABASE_URL = "sqlite:///example.db"
engine = create_engine(SQLALCHEMY_DATABASE_URL)
SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)

Base = declarative_base()

# Define Database Model
class Item(Base):
    __tablename__ = "items"
    id = Column(Integer, primary_key=True)
    title = Column(String)
    description = Column(String)

# Create Database Tables
Base.metadata.create_all(bind=engine)

# Define Pydantic Model
class ItemModel(BaseModel):
    title: str
    description: str

# Define Dependency for Database Session
def get_db():
    db = SessionLocal()
    try:
        yield db
    finally:
        db.close()

# Define Route for Creating Item
@app.post

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