diff --git a/backend/sample.db b/backend/sample.db
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diff --git a/backend/storage.py b/backend/storage.py
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--- a/backend/storage.py
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-# storage.py - storage backend for TeraHz
-'''TeraHz storage backend'''
-# Copyright Kristjan Komloši 2019
-# All code in this file is licensed under the ISC license,
-# provided in LICENSE.txt
-
-
-import sqlite3
-class jsonStorage:
-    '''Class for simple sqlite3 database of JSON entries'''
-    def __init__(self, dbFile):
-        '''Storage object constructor. Argument is filename'''
-        self.db = sqlite3.connect(dbFile)
-
-    def listJSONs(self):
-        '''Returns a list of all existing entries.'''
-        c = self.db.cursor()
-        c.execute('SELECT * FROM storage')
-        result = c.fetchall()
-        c.close()
-        return result
-
-    def storeJSON(self, jsonString, comment):
-        '''Stores a JSON entry along with a timestamp and a comment.'''
-        c = self.db.cursor()
-        c.execute(('INSERT INTO storage VALUES (datetime'
-                   '(\'now\', \'localtime\'), ?, ?)'), (comment, jsonString))
-        c.close()
-        self.db.commit()
-
-    def retrieveJSON(self, timestamp):
-        '''Retrieves a JSON entry. Takes a timestamp string'''
-        c = self.db.cursor()
-        c.execute('SELECT * FROM storage WHERE timestamp = ?', (timestamp,))
-        result = c.fetchall()
-        c.close()
-        return result