diff --git a/nyc_citibike/assets/constants.py b/nyc_citibike/assets/constants.py
index fa5e998..1e6d0e5 100644
--- a/nyc_citibike/assets/constants.py
+++ b/nyc_citibike/assets/constants.py
@@ -1,6 +1,65 @@
-BIKE_RIDES_FILE_PATH = "data/raw/bike_rides_{}.csv"
-DOWNLOAD_URL = "https://s3.amazonaws.com/tripdata/JC-{}-citibike-tripdata.csv.zip"
+RAW_FILE_PATH = "data/raw"
 
-DATE_FORMAT = "%Y%m"
-START_DATE = "202301"
-END_DATE = "202312"
\ No newline at end of file
+RAW_FILE_NAME = "bike_rides_{}.csv"
+
+# HISTORIC_DOWNLOAD_URL = "https://s3.amazonaws.com/tripdata/{}-citibike-tripdata.zip"
+HISTORIC_DOWNLOAD_URL = 'http://127.0.0.1:8000/{}-citibike-tripdata.zip'
+
+CURRENT_DOWNLOAD_URL = "https://s3.amazonaws.com/tripdata/{}-citibike-tripdata.csv.zip"
+
+START_DATE = "202401"
+END_DATE = "202403"
+
+HISTORIC_START_YEAR = "2020"
+HISTORIC_END_YEAR = "2024"
+
+SCHEMA = {"ride_id": "STRING",
+          "rideable_type": "STRING",
+          "start_time": "TIMESTAMP",
+          "stop_time": "TIMESTAMP",
+          "start_station_name": "STRING",
+          "start_station_id": "STRING",
+          "end_station_name": "STRING",
+          "end_station_id": "STRING",
+          "start_station_latitude": "NUMERIC",
+          "start_station_longitude": "NUMERIC",
+          "end_station_latitude": "NUMERIC",
+          "end_station_longitude": "NUMERIC",
+          "user_type": "STRING",
+          "trip_duration": "NUMERIC",
+          "bike_id": "INTEGER",
+          "gender": "STRING",
+          "birth_year": "STRING"
+          }
+
+SCHEMA_OLD = {"ride_id": "STRING",
+              "rideable_type": "STRING",
+              "started_at": "TIMESTAMP",
+              "ended_at": "TIMESTAMP",
+              "start_station_name": "STRING",
+              "start_station_id": "STRING",
+              "end_station_name": "STRING",
+              "end_station_id": "STRING",
+              "start_lat": "NUMERIC",
+              "start_lng": "NUMERIC",
+              "end_lat": "NUMERIC",
+              "end_lng": "NUMERIC",
+              "member_casual": "STRING"
+              }
+
+
+SCHEMA_NEW = {
+    "ride_id": "STRING",
+    "rideable_type": "STRING",
+    "started_at": "STRING",
+    "ended_at": "STRING",
+    "start_station_name": "STRING",
+    "start_station_id": "STRING",
+    "end_station_name": "STRING",
+    "end_station_id": "STRING",
+    "start_lat": "STRING",
+    "start_lng": "STRING",
+    "end_lat": "STRING",
+    "end_lng": "STRING",
+    "member_casual": "STRING",
+}
\ No newline at end of file