Price Monitor for Buyers

Monitoring of the price of the goods for customers. The feature of the implementation is the use of a built-in SQLite database, in which goods are stored for the last few days (adjusted), the prices of which are updated at the start of the program, or on a scheduled time, once a day. This allows you to avoid the need to contact the BD server every time (in this case MS SQL) and reduce the time to get the result for the popular product.