文档介绍：网站案例分析与设计
several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate
二、简答题(50%)
1) ，并简述其作用
答：Connection 对象提供与数据源的连接。
Command 对象用于返回数据、修改数据、运行存储过程以及发送或检索参数信息的数据库命令。
DataReader 从数据源中提供高性能的数据流。
DataAdapter 提供连接 DataSet 对象和数据源的桥梁。
DataAdapter 使用 Command 对象在数据源中执行 SQL 命令，以便将数据加载到 DataSet 中，并使对 DataSet 中数据的更改与数据源保持一致。
2) (叙述从用户输入网址直至网页显示整个流程)
答：，。 (Dynamic Link Library，动态链接库)文件。
若在输出缓冲中找不到此页面或找不到编译过的dll文件，则将此页面转换成源程序代码，然后由编译器将其编译成dll文件。
如果找到了编译过的dll文件，则省略了编译的步骤，而是直接利用编译过的dll文件建立对象，将执行结果返回到客户端浏览器。所有在执行的时候，，但是以后调用就很快。
several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate size. Per-2~3 measurement, such as proceeds of c values are equal and equal to the design value, then the vertical installation accurate. For example a, b, and c valueswhile on horizontal vertical errors for measurement, General in iron angle code bit at measurement level points grid errors, specific method is from baseline to methyl vertical box center line distance for a,, to b vertical box distance for b, list can measured
several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate size. Per-2~3 measurement, such as proceeds of c values are equal and equal to the design value, then the vertical installation accurate. For example a, b, and c valueswhile on horizontal vertical errors for measurement, General in iron angle code bit at measurement level points grid errors, specific method is from baseline to methyl vertical box center line distance for a,, to b vertical box distance for b, list can measured
several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate size. Per-2~3 measurement, such as proceeds of c values are equal and equal to the d