能给我发一点SAP R/3 的相关英语文章吗？最好有介绍，优点，缺点介绍，以及如何改进！谢谢！

SAP R/3 Overview
SAP R/3 is SAP's integrated software solution for client/server and distributed open systems. SAP's R/3 is the world's most-used standard business software for client/server computing. R/3 meets the needs of a customer from the small grocer with 3 users to the multi-billion dollar companies The software is highly customizable using SAP's proprietary programming language, ABAP/4. R/3 is scalable and highly suited for many types and sizes of organizations.

The R/3 architecture is comprised of application and database servers. The application servers house the software and the database servers handle document updates and master file databases. The system can support an unlimited number of servers and a variety of hardware configurations. For more info. see SAP R/3 Architecture at SAP home page.

SAP R/3 is based on various hardware and software architectures, running on most types of UNIX, on Windows NT and OS/400. For more