There are 4 ways to exchange data with the R/3 System:1. The R/3 database systems allow you to directly access R/3 data using proprietary database interfaces. You should use these interfaces for read accesses only.2. File I/O allows you to access f

指纹监控系统，在上位机中，结合数据库，录入指纹，保存个人指纹信息功能，可以当作门禁系统使用-Fingerprint monitoring system, the host computer, combined with database input fingerprint, save the the personal fingerprint information function, can be used as access control systems