要求：能对小型自选商场的商品进货、销售、库存等环节进行管理。主要有：

1）能记录每一笔进货，查询商品的进货记录，并能按月进行统计。

2）能记录每一笔售货，查询商品的销售情况，并能进行日盘存、月盘存。

3）在记录进货及售货的同时，必须动态刷新库存。

4）能查询某个厂商或供应商的信息。

5）设计收银台程序，能根据输入的商品编号、数量，显示某顾客所购商品的清单，并显示收付款情况。

-Requirements: to the mall choice for small commodity purchase, sales, inventory and other aspects of management. Are: 1) be able to record each purchase, the purchase of goods query records, and can monthly statistics. 2) be able to record each sales inquiries, merchandise sales, inventory and can be days, months inventory. 3) Purchases and sales in the record at the same time, must be dynamically refreshed inventory. 4) be able to query a manufacturer or supplier information. 5) Design checkout procedures, according to the input product number, quantity, shows a list of goods purchased by customers and show payments received.