转国外的数据库三层源码(带连接池),仅测试D7成功。 代码精简易懂,供大家学习研究。 TCP AdoServer/Client is a multi-tier tool to design a a thin client application that connects to an application server. It is built using Indy components and ADO. TCP AdoServer/Client is a simple and complete solution to develop and implement a multi-tier applications.