added a log for start and end of base processing

data_check.py

@@ -0,0 +1,17 @@
+import polars as pl
+
+df = pl.read_parquet('data/warehouse/transactions.parquet')
+print("Data loaded from Parquet file:")
+print(df)
+
+relevant_data = df.sql('''
+    SELECT 
+        date,
+        sum(transaction_amount) as total
+    FROM self
+    GROUP BY date
+    ORDER BY date DESC
+    '''
+)
+print("Data after SQL query:")
+print(relevant_data)