diff --git a/app/schemas/__init__.py b/app/schemas/__init__.py
index e69de29..2d03f4c 100644
--- a/app/schemas/__init__.py
+++ b/app/schemas/__init__.py
@@ -0,0 +1,4 @@
+from app.schemas.file import *
+from app.schemas.content import *
+from app.schemas.relationship import *
+from app.schemas.document import *
\ No newline at end of file
diff --git a/app/schemas/content.py b/app/schemas/content.py
new file mode 100644
index 0000000..d85f947
--- /dev/null
+++ b/app/schemas/content.py
@@ -0,0 +1,20 @@
+from uuid import UUID
+from pydantic import BaseModel, ConfigDict
+
+
+class ContentBase(BaseModel):
+    file_id: UUID
+
+    chunk_index: int
+
+    content_text: str
+
+
+class ContentCreate(ContentBase):
+    pass
+
+
+class ContentResponse(ContentBase):
+    id: UUID
+
+    model_config = ConfigDict(from_attributes=True)
\ No newline at end of file
diff --git a/app/schemas/file.py b/app/schemas/file.py
new file mode 100644
index 0000000..a392399
--- /dev/null
+++ b/app/schemas/file.py
@@ -0,0 +1,28 @@
+from uuid import UUID
+from datetime import datetime
+from pydantic import BaseModel, ConfigDict
+
+
+class FileBase(BaseModel):
+    file_path: str
+
+
+class FileCreate(FileBase):
+    pass
+
+
+class FileResponse(BaseModel):
+    id: UUID
+
+    file_path: str
+    file_hash: str
+
+    mime_type: str
+
+    last_modified: datetime
+
+    indexed_at: datetime
+
+    tags: list[str]
+
+    model_config = ConfigDict(from_attributes=True)
\ No newline at end of file
diff --git a/app/schemas/relationship.py b/app/schemas/relationship.py
new file mode 100644
index 0000000..cb6e1d7
--- /dev/null
+++ b/app/schemas/relationship.py
@@ -0,0 +1,19 @@
+from uuid import UUID
+from pydantic import BaseModel, ConfigDict
+
+
+class RelationshipBase(BaseModel):
+    source_file_id: UUID
+    target_file_id: UUID
+    similarity_score: float
+
+
+class RelationshipCreate(RelationshipBase):
+    pass
+
+
+class RelationshipResponse(RelationshipBase):
+    id: UUID
+    relation_type: str
+
+    model_config = ConfigDict(from_attributes=True)
\ No newline at end of file