first commit

app/db/base.py

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+from sqlmodel import SQLModel
+
+__all__ = ["SQLModel"]

app/db/session.py

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+from sqlmodel import create_engine, Session
+from app.core.config import settings
+
+
+engine = create_engine(settings.DATABASE_URL, echo=False)
+
+
+def get_session() -> Session:
+    with Session(engine) as session:
+        yield session