diff --git a/schemas/book.py b/schemas/book.py
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index 0000000..61020ed
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+++ b/schemas/book.py
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+from pydantic import BaseModel, Field
+from typing import Optional
+
+class BookBase(BaseModel):
+    title: str = Field(..., min_length=1, max_length=200, description="Book title")
+    author: str = Field(..., min_length=1, max_length=100, description="Book author")
+    description: Optional[str] = Field(None, description="Book description")
+    isbn: str = Field(..., min_length=10, max_length=13, description="Book ISBN")
+    publication_year: Optional[int] = Field(None, gt=1000, lt=2100, description="Year of publication")
+    publisher: Optional[str] = Field(None, max_length=100, description="Book publisher")
+    page_count: Optional[int] = Field(None, gt=0, description="Number of pages")
+    language: Optional[str] = Field(None, max_length=50, description="Book language")
+
+class BookCreate(BookBase):
+    class Config:
+        schema_extra = {
+            "example": {
+                "title": "The Great Gatsby",
+                "author": "F. Scott Fitzgerald",
+                "description": "A story of decadence and excess",
+                "isbn": "9780743273565",
+                "publication_year": 1925,
+                "publisher": "Charles Scribner's Sons",
+                "page_count": 180,
+                "language": "English"
+            }
+        }
+
+class Book(BookBase):
+    id: int = Field(..., description="Book ID")
+
+    class Config:
+        orm_mode = True
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