Add Book model

models/book.py

@@ -0,0 +1,16 @@
+from sqlalchemy import Column, String, Integer, ForeignKey
+from sqlalchemy.orm import relationship
+from sqlalchemy.sql import func
+from core.database import Base
+import uuid
+
+class Book(Base):
+    __tablename__ = "books"
+    id = Column(Integer, primary_key=True, index=True)
+    title = Column(String, nullable=False)
+    author = Column(String, nullable=False)
+    description = Column(String)
+    published_year = Column(Integer)
+    isbn = Column(String, unique=True, index=True)
+    created_at = Column(DateTime, default=func.now())
+    updated_at = Column(DateTime, default=func.now(), onupdate=func.now())