diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 6380e4b..10eabb9 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -34,6 +34,8 @@ repos:
     rev: 4.0.1
     hooks:
     -   id: flake8
+        exclude: ^(alembic|.github)
+        args: [--config, .flake8]
         additional_dependencies:
           - "flake8-bandit"
           - "flake8-bugbear"
diff --git a/alembic/versions/1716bfecf684_add_birthdays.py b/alembic/versions/1716bfecf684_add_birthdays.py
new file mode 100644
index 0000000..9065993
--- /dev/null
+++ b/alembic/versions/1716bfecf684_add_birthdays.py
@@ -0,0 +1,38 @@
+"""Add birthdays
+
+Revision ID: 1716bfecf684
+Revises: 581ae6511b98
+Create Date: 2022-07-19 21:46:42.796349
+
+"""
+import sqlalchemy as sa
+
+from alembic import op
+
+# revision identifiers, used by Alembic.
+revision = "1716bfecf684"
+down_revision = "581ae6511b98"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table(
+        "birthdays",
+        sa.Column("birthday_id", sa.Integer(), nullable=False),
+        sa.Column("user_id", sa.BigInteger(), nullable=True),
+        sa.Column("birthday", sa.DateTime(), nullable=False),
+        sa.ForeignKeyConstraint(
+            ["user_id"],
+            ["users.user_id"],
+        ),
+        sa.PrimaryKeyConstraint("birthday_id"),
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table("birthdays")
+    # ### end Alembic commands ###
diff --git a/database/crud/birthdays.py b/database/crud/birthdays.py
new file mode 100644
index 0000000..6ff714d
--- /dev/null
+++ b/database/crud/birthdays.py
@@ -0,0 +1,22 @@
+from datetime import date
+from typing import Optional
+
+from sqlalchemy import select
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from database.models import Birthday
+
+__all__ = ["add_birthday", "get_birthday_for_user"]
+
+
+async def add_birthday(session: AsyncSession, user_id: int, birthday: date):
+    """Add a user's birthday into the database"""
+    bd = Birthday(user_id=user_id, birthday=birthday)
+    session.add(bd)
+    await session.commit()
+
+
+async def get_birthday_for_user(session: AsyncSession, user_id: int) -> Optional[Birthday]:
+    """Find a user's birthday"""
+    statement = select(Birthday).where(Birthday.user_id == user_id)
+    return (await session.execute(statement)).scalar_one_or_none()
diff --git a/database/models.py b/database/models.py
index d663204..d906406 100644
--- a/database/models.py
+++ b/database/models.py
@@ -12,6 +12,7 @@ Base = declarative_base()
 __all__ = [
     "Base",
     "Bank",
+    "Birthday",
     "CustomCommand",
     "CustomCommandAlias",
     "DadJoke",
@@ -46,6 +47,18 @@ class Bank(Base):
     user: User = relationship("User", uselist=False, back_populates="bank", lazy="selectin")
 
 
+class Birthday(Base):
+    """A user's birthday"""
+
+    __tablename__ = "birthdays"
+
+    birthday_id: int = Column(Integer, primary_key=True)
+    user_id: int = Column(BigInteger, ForeignKey("users.user_id"))
+    birthday: datetime = Column(DateTime, nullable=False)
+
+    user: User = relationship("User", uselist=False, back_populates="birthday", lazy="selectin")
+
+
 class CustomCommand(Base):
     """Custom commands to fill the hole Dyno couldn't"""
 
@@ -149,6 +162,9 @@ class User(Base):
     bank: Bank = relationship(
         "Bank", back_populates="user", uselist=False, lazy="selectin", cascade="all, delete-orphan"
     )
+    birthday: Birthday = relationship(
+        "Birthday", back_populates="user", uselist=False, lazy="selectin", cascade="all, delete-orphan"
+    )
     nightly_data: NightlyData = relationship(
         "NightlyData", back_populates="user", uselist=False, lazy="selectin", cascade="all, delete-orphan"
     )
diff --git a/didier/cogs/discord.py b/didier/cogs/discord.py
new file mode 100644
index 0000000..1152922
--- /dev/null
+++ b/didier/cogs/discord.py
@@ -0,0 +1,49 @@
+import discord
+from discord.ext import commands
+
+from database.crud import birthdays
+from didier import Didier
+from didier.utils.types.datetime import str_to_date
+from didier.utils.types.string import leading
+
+
+class Discord(commands.Cog):
+    """Cog for commands related to Discord, servers, and members"""
+
+    client: Didier
+
+    def __init__(self, client: Didier):
+        self.client = client
+
+    @commands.group(name="Birthday", aliases=["Bd", "Birthdays"], case_insensitive=True, invoke_without_command=True)
+    async def birthday(self, ctx: commands.Context, user: discord.User = None):
+        """Command to check the birthday of a user"""
+        user_id = (user and user.id) or ctx.author.id
+        async with self.client.db_session as session:
+            birthday = await birthdays.get_birthday_for_user(session, user_id)
+
+        name = "Jouw" if user is None else f"{user.display_name}'s"
+
+        if birthday is None:
+            return await ctx.reply(f"{name} verjaardag zit niet in de database.", mention_author=False)
+
+        day, month = leading("0", str(birthday.birthday.day)), leading("0", str(birthday.birthday.month))
+
+        return await ctx.reply(f"{name} verjaardag staat ingesteld op **{day}/{month}**.", mention_author=False)
+
+    @birthday.command(name="Set", aliases=["Config"])
+    async def birthday_set(self, ctx: commands.Context, date_str: str):
+        """Command to set your birthday"""
+        try:
+            date = str_to_date(date_str)
+        except ValueError:
+            return await ctx.reply(f"`{date_str}` is geen geldige datum.", mention_author=False)
+
+        async with self.client.db_session as session:
+            await birthdays.add_birthday(session, ctx.author.id, date)
+            await self.client.confirm_message(ctx.message)
+
+
+async def setup(client: Didier):
+    """Load the cog"""
+    await client.add_cog(Discord(client))
diff --git a/didier/utils/types/datetime.py b/didier/utils/types/datetime.py
index 3701b4f..91c3583 100644
--- a/didier/utils/types/datetime.py
+++ b/didier/utils/types/datetime.py
@@ -1,6 +1,13 @@
-__all__ = ["int_to_weekday"]
+import datetime
+
+__all__ = ["int_to_weekday", "str_to_date"]
 
 
 def int_to_weekday(number: int) -> str:  # pragma: no cover # it's useless to write a test for this
     """Get the Dutch name of a weekday from the number"""
     return ["Maandag", "Dinsdag", "Woensdag", "Donderdag", "Vrijdag", "Zaterdag", "Zondag"][number]
+
+
+def str_to_date(date_str: str) -> datetime.date:
+    """Turn a string into a DD/MM/YYYY date"""
+    return datetime.datetime.strptime(date_str, "%d/%m/%Y").date()
diff --git a/readme.md b/readme.md
index 4fd4143..dae8347 100644
--- a/readme.md
+++ b/readme.md
@@ -42,6 +42,12 @@ docker-compose up -d db-pytest
 # Starting Didier
 python3 main.py
 
+# Running database migrations
+alembic upgrade head
+
+# Creating a new database migration
+alembic revision --autogenerate -m "Revision message here"
+
 # Running tests
 pytest