diff --git a/main.py b/main.py
index c21582d..5ef7e45 100644
--- a/main.py
+++ b/main.py
@@ -26,8 +26,7 @@ class DBConn:
         self.con = None
         self.counter = 0
         self.ts = ''
-        self.table_col_map = {}
-        self.child_tables = {}
+        self.table_mapping = {}
         self.init_db()
 
     def init_db(self):
@@ -44,7 +43,6 @@ class DBConn:
         if args.debug:
             print(f"create sql = {create_tbl_sql}")
         self.cur.execute(create_tbl_sql)
-        self.table_col_map[tbl_name] = cols
 
     def write_to_database(self, tbl, cols):
         keys = cols.keys()  # OrderedDict
@@ -60,7 +58,7 @@ class DBConn:
 
         # there might be a scenario that new cols might appear at a later stage, if so,
         # we shall accommodate by adding it to the database
-        tbl_cols = self.table_col_map[tbl]
+        tbl_cols = self.table_mapping[tbl]
         not_found = []
         for col in cols:
             if col not in tbl_cols:
@@ -71,7 +69,7 @@ class DBConn:
                 self.cur.execute(f"alter table \"{tbl}\" add column \"{new_col}\" text")
 
             print(f"added {not_found} cols to {tbl}")
-            self.table_col_map[tbl] = cols
+            self.table_mapping[tbl] = cols
 
         sql = f"insert into \"{tbl}\" ({col_names}) values({value_placeholders})"
         self.cur.execute(sql, values)
@@ -119,7 +117,7 @@ class DBConn:
                     if child_header not in attributes:
                         attributes.append(child_header)
 
-        self.child_tables[f"{prev_step}{current_level}"] = attributes
+        self.table_mapping[f"{prev_step}{current_level}"] = attributes
         return {"flat_attributes": flat_attributes, "children": children, "attributes": attributes}
 
     def extract_child_value(self, item, k, ext, prev_step, join_col_value):
@@ -139,7 +137,7 @@ class DBConn:
         dbConn.write_to_database(k_, child_value)
 
     def make_tables(self):
-        for (mhKey, mhVal) in self.child_tables.items():
+        for (mhKey, mhVal) in self.table_mapping.items():
             self.make_table(mhKey, mhVal)
 
     def parse_json(self):
@@ -194,8 +192,7 @@ class DBConn:
                 "children": children
             }, indent=2)
         )
-        self.child_tables[top_level] = attributes
-
+        self.table_mapping[top_level] = attributes
         self.make_tables()
 
         children_names = children.keys()