diff --git a/src/game_tables.py b/src/game_tables.py
index 8fe43f1..81e1167 100644
--- a/src/game_tables.py
+++ b/src/game_tables.py
@@ -44,6 +44,7 @@ class GameTable:
                 ),
             )
             self.created = True
+            self.updated = True
             return
         if not self.updated:
             cursor.execute(
diff --git a/src/key_tables.py b/src/key_tables.py
index e69de29..c58af4f 100644
--- a/src/key_tables.py
+++ b/src/key_tables.py
@@ -0,0 +1,77 @@
+class KeyTable:
+    key: str
+    game_table_id: number
+
+    def __init__(
+        self, key: str, game_table_id: int, created: bool = True, updated: bool = True
+    ):
+        self.key = key
+        self.game_table_id = game_table_id
+
+    def toJson(self):
+        return {"key": self.key, "table_id": self.game_table_id}
+
+    def reserve(self, game_table_id, cursor):
+        self.game_table_id = game_table_id
+        this.updated = False
+
+    def free(self, cursor):
+        self.game_table_id = None
+        self.updated = False
+
+    def commit(cursor):
+        if not self.created:
+            cursor.execute(
+                """INSERT INTO game_keys
+                   (key, game_table_id)
+                   VALUES (?, ?)
+                """,
+                (
+                    self.key,
+                    self.game_table_id if self.game_table_id != None else "NULL",
+                ),
+            )
+            self.created = True
+            self.updated = True
+        if not self.updated:
+            cursor.execute(
+                """UPDATE game_keys
+                   SET game_table_id = ?
+                   WHERE key = ?""",
+                (
+                    self.game_table_id if self.game_table_id != None else "NULL",
+                    self.key,
+                ),
+            )
+            self.updated = True
+
+
+def get_key_for_table(game_table_id, cursor):
+    cursor.execute(
+        """SELECT key, game_table_id
+           FROM game_keys
+           WHERE game_table_id = ?""",
+        (game_table_id,),
+    )
+    row = cursor.fetchone()
+
+    if len(row) == 0:
+        return None
+
+    return KeyTable(row[0], row[1])
+
+
+def get_reserved_keys(cursor):
+    curosr.execute("""SELECT key, game_table_id
+           FROM game_keys
+           WHERE game_table_id IS NOT NULL""")
+    rows = cursor.fetchall()
+    return [KeyTable(row[0], row[1]) for row in rows]
+
+
+def get_free_keys(cursor):
+    cursor.execute("""SELECT key, game_table_id
+           FROM game_keys
+           WHERE game_table_id IS NULL""")
+    rows = cursor.fetchall()
+    return [KeyTable(row[0], row[1]) for row in rows]
diff --git a/src/main.py b/src/main.py
index 58f2557..7cbc488 100644
--- a/src/main.py
+++ b/src/main.py
@@ -38,7 +38,7 @@ def get_active_tables():
     cursor = db.cursor()
     tables = game_tables.read_active(cursor)
     cursor.close()
- 
+
     return jsonify([table.toJson() for table in tables])
 
 
@@ -47,7 +47,7 @@ def get_tables():
     db = get_db()
     cursor = db.cursor()
     tables = game_tables.read_all(cursor)
-    cursor.close();
+    cursor.close()
 
     return jsonify([table.toJson() for table in tables])