一、XML限制
### --- XML限制介紹
——> 在XML技術裡,可以編寫一個文檔來限制一個XML文檔的書寫規範,這稱之為XML限制。
~~~ # 常見的xml限制:
——> DTD
——> Schema
~~~ # 作為程式員隻要掌握兩點
——> 會閱讀
——> 會引入
——> 不用自己編寫
![](https://img.laitimes.com/img/_0nNw4CM6IyYiwiM6ICdiwiI0gTMx81dsQWZ4lmZf1GLlpXazVmcvwFciV2dsQXYtJ3bm9CX9s2RkBnVHFmb1clWvB3MaVnRtp1XlBXe0xCMy81dvRWYoNHLwEzX5xCMx8FesU2cfdGLwMzX0xiRGZkRGZ0Xy9GbvNGLpZTY1EmMZVDUSFTU4VFRR9Fd4VGdsYTMfVmepNHLrJXYtJXZ0F2dvwVZnFWbp1zczV2YvJHctM3cv1Ce-cGcq5SMyUTO0MzNkRWN1kDNkVTNyYzX5QTNzMDMzEzLcRDMyIDMy8CXn9Gbi9CXzV2Zh1WavwVbvNmLvR3YxUjLyM3Lc9CX6MHc0RHaiojIsJye.jpg)
Walter Savage Landor:strove with none,for none was worth my strife.Nature I loved and, next to Nature, Art:I warm'd both hands before the fire of life.It sinks, and I am ready to depart
——W.S.Landor