数据：有索引，查询七百万数据库的表：

ASP+MSSQL2005(IIS6):
Hit Count:                    12509
Socket connects:              12509
Total Bytes Sent (in KB):     3055.48
Bytes Sent Rate (in KB/s):    50.93
Total Bytes Recv (in KB):     5449.13
Bytes Recv Rate (in KB/s):    90.82

ASP+Access(IIS6):
Number of hits:               1279
Socket Connects:              1279
Total Bytes Sent (in KB):     313.50
Bytes Sent Rate (in KB/s):    5.23
Total Bytes Recv (in KB):     555.82
Bytes Recv Rate (in KB/s):    9.26

PHP+MYSQL ( Apache 2.2 ):
Hit Count:                    11400
Socket connects:              11400
Total Bytes Sent (in KB):     2170.90
Bytes Sent Rate (in KB/s):    36.18
Total Bytes Recv (in KB):     12807.67
Bytes Recv Rate (in KB/s):    213.47

得出结果：在数据量很大的时候，Mssql性能远远超过Access的查询性能，MSSQL2005和Mysql在Win2003平台下性能不相伯仲，我们在建立大型网站的时候，如果要考虑程序语言的选择，可以参考以上数据。