diff --git a/database_setup/models.py b/database_setup/models.py
index cc6be82..6c23d36 100644
--- a/database_setup/models.py
+++ b/database_setup/models.py
@@ -41,6 +41,9 @@ class CategoryGroup(SQLModel, table=True):
         pad_length (int): The padding length for the category group, default is 12.
         username_length (int): The username length for the category group, default is 12.
         guild (Guild | None): The guild relationship back-populated from the Guild model.
+
+        Table Constraints:
+        __table_args__: Unique constraint on guild_id and name to ensure unique category groups within a guild.
     """
 
     __tablename__: str = "CategoryGroups"
@@ -66,9 +69,28 @@ class CategoryGroup(SQLModel, table=True):
 
 
 class Category(SQLModel, table=True):
+    """
+    Represents a category in the database.
+
+    Attributes:
+        id (int): The unique identifier for the category. Primary key.
+        name (str): The name of the category with a maximum length of 30 characters.
+        group_id (int): The identifier of the group to which the category belongs.
+            Foreign key referencing CategoryGroups.id.
+        size (int): The size attribute of the category, default is 3.
+        is_ascending (bool): Indicates if the category is in ascending order. Default is True.
+        is_time_record (bool): Indicates if the category is a time record. Default is False.
+        is_validated (bool): Indicates if the category is validated. Default is True.
+        category_group (CategoryGroup | None): The relationship to the CategoryGroup model.
+        scores (list["Score"] | None): The relationship to the Score model with cascade delete enabled.
+
+    Table Constraints:
+        __table_args__: Unique constraint on group_id and name to ensure unique category names within a group.
+    """
+
     __tablename__: str = "Categories"
 
-    id: int | None = Field(default=None, primary_key=True)
+    id: int = Field(default=None, primary_key=True)
     name: str = Field(max_length=30)
     group_id: int = Field(
         sa_column=Column(
@@ -89,6 +111,18 @@ class Category(SQLModel, table=True):
 
 
 class Score(SQLModel, table=True):
+    """
+    Represents a score entry in the database.
+
+    Attributes:
+        username (str): The username associated with the score. This is a primary key.
+        score (float): The score value.
+        category_id (int): The ID of the category this score belongs to. This is a primary key and a foreign key
+            referencing the Categories table.
+        category (Category | None): The relationship to the Category model, back-populated by the scores attribute
+            in the Category model.
+    """
+
     __tablename__: str = "Scores"
 
     username: str = Field(max_length=30, nullable=False, primary_key=True)
@@ -106,6 +140,19 @@ class Score(SQLModel, table=True):
 
 
 class Submission(SQLModel, table=True):
+    """
+    Represents a submission in the database.
+
+    Attributes:
+        category_id (int): The ID of the category. This is a primary key.
+        group_id (int): The ID of the group.
+        guild_id (int): The ID of the guild.
+        message_id (int): The ID of the message.
+        score (str): The score of the submission, with a maximum length of 30 characters.
+        user_id (int): The ID of the user.
+        username (str): The username of the user. This is a primary key.
+    """
+
     __tablename__: str = "Submissions"
 
     category_id: int = Field(