diff --git a/EasyGA/database/sql_database.py b/EasyGA/database/sql_database.py
index cc0344d..6c1d39b 100644
--- a/EasyGA/database/sql_database.py
+++ b/EasyGA/database/sql_database.py
@@ -1,5 +1,5 @@
 import sqlite3
-
+from typing import get_type_hints
 from tabulate import tabulate
 
 class SQL_Database:
@@ -42,8 +42,17 @@ class SQL_Database:
 
 
 
-    def insert_config(self,ga):
-        """Insert the configuration attributes into the config."""
+    def insert_config(self, ga):
+        """
+        Insert the configuration attributes into the config.
+
+        Notes:
+
+            "Attributes" here refers to ga.__annotations__.keys(),
+            which allows the attributes to be customized.
+
+            Only attributes that are bool, float, int, or str will be used.
+        """
 
         # Get the current config and add one for the new config key
         self.config_id = self.get_current_config()
@@ -55,33 +64,18 @@ class SQL_Database:
             self.config_id = self.config_id + 1
 
         # Getting all the attributes from the attributes class
-        db_config_dict = (
-            (attr_name, getattr(ga, attr_name))
+        db_config = [
+            (self.config_id, attr_name, attr_value)
             for attr_name
             in ga.__annotations__
-            if attr_name != "population"
-        )
-
-        # Types supported in the database
-        sql_type_list = [int, float, str]
-
-        # Loop through all attributes
-        for name, value in db_config_dict:
-
-            # not a function
-            if not callable(value):
-
-                # Convert to the right type
-                value = str(value)
-
-                if "'" not in value and '"' not in value:
-
-                    # Insert into database
-                    self.conn.execute(f"""
-                    INSERT INTO config(config_id, attribute_name, attribute_value)
-                    VALUES ('{self.config_id}', '{name}','{value}');""")
-
+            if isinstance((attr_value := getattr(ga, attr_name)), (bool, float, int, str))
+        ]
 
+        query = f"""
+            INSERT INTO config(config_id, attribute_name, attribute_value)
+            VALUES (?, ?, ?);
+        """
+        self.conn.executemany(query, db_config)
         self.config_id = self.get_current_config()
 
 
@@ -197,7 +191,7 @@ class SQL_Database:
         SELECT DISTINCT config_id
         FROM config;""")
 
-    def get_each_generation_number(self,config_id):
+    def get_each_generation_number(self, config_id):
         """Get an array of all the generation numbers"""
 
         return self.query_all(f"""
@@ -305,16 +299,6 @@ class SQL_Database:
         os.remove(self._database_name)
 
 
-    def get_var_names(self, ga):
-        """Returns a list of the names of attributes of the ga."""
-
-        # Loop through all attributes
-        for var in ga.__dict__.keys():
-
-            # Remove leading underscore
-            yield (var[1:] if (var[0] == '_') else var)
-
-
     #=====================================#
     # Setters and Getters:                #
     #=====================================#