Add helper.py
Add method interface for insertEntry method
Connect to the database when constructor is called in Db
Add conn and cur members
Add generic method for inserting queries in the databse
Add check to verify the presence of the table key
Correct syntax error in insertEntry
Refactor insertRecord and add perform method
Add test structure for db
Add __init__ file in src directory
Connect to the database in the setUp method
Add cursor and connection attributes
Add tearDown method to test_db
Add select method
Restructure the app and add basic method for CRUD
Move db logic to a package
Add files from db package and test to the new ones
Add greaterThan method
Add tests for greaterThan
Add lessOrEquals