网络上的数据共享交换技术的应用

Application of Exchange Technique for Data Sharing on Network

利用ＶｉｓｕａｌＦｏｘＰｒｏ３．０新增的缓冲区和网络功能函数，可以解决数据库的数据共享问题。ＢＵＦＦＥＲ支持保守和开放两种网上数据操作方式，保守方式虽然安全，但网上数据维护速度缓慢。开放式可以很好地解决多用户数据共享和数据操作问题，但须配合使用好操作函数。本文以房产管理数据库软件为例，详述这一技术的灵活运用。

The problems of data sharing and conflicting on management network can be solved satisfactorily by making full use of the newly added buffers and the network function in Visual FoxPro 3.0. These buffers support pessimistic and optimistic data management patterns on the network. The former pattern is characterized in safe but slow in speed for data safeguardyng. The later is more effective for data operation and multiple data share associated with the network functions. The flexibility of this technique is detailed in this paper.The real estate management software is described as an example.