Oracle9i 数据库管理基础II，前言 1 联网概览 目标网络环境的挑战 简单网络：两层简单网络到复杂网络：N 层复杂的网络 Oracle9i 联网解决方案-Oracle9i Database Fundamentals II, Introduction 1 Overview of the target network interconnection challenges of the environment simple network: two simple network