说明：  小型超市进销存数据库设计。大量使用存储过程，所以有效得防注入式攻击。但对海量数据的处理和数据库的迁移存储过程就成了弱点
(Invoicing database design small supermarket. Extensive use of stored procedures, so effective have anti-injection attack. But for massive data processing and database stored procedure migration became a weakness)