diff --git a/config.py b/config.py
index b92385e..b877bb3 100644
--- a/config.py
+++ b/config.py
@@ -1,5 +1,6 @@
 import os
 
+basedir = os.environ.get('DATABASE_FOLDER', os.path.abspath(os.path.dirname(__file__)))
 DOCUMENT_ID = "1Xvd0aHA7mr-_b5C3b-sQ66BQsJiOGIT2UesP7kG26oU"
 SHEET_NAME = "aaa"
 WORK_SHEET = "Worksheet"
@@ -9,3 +10,10 @@
 OUTPUT_FILE = "output.json"
 TEST_PATH = os.environ.get("TEST_PATH", os.path.dirname(__file__) + "/test_results")
 CHARTS_IMG_PATH = "static/images"
+SQLALCHEMY_MIGRATE_REPO = os.path.join(basedir, 'db_repository')
+
+if os.environ.get('DATABASE_URL') is None:
+    DATABASE_URI = ('sqlite:///' + os.path.join(basedir, 'app.db') +
+                               '?check_same_thread=False')
+else:
+    DATABASE_URI = os.environ['DATABASE_URL']
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