1.扫描端口
2.指纹信息
3.在URL后面直接判断
Access:
and (select count(*) from MSysAccessObjects)>0 返回正常说明是access
and exists(select count(*) from 表)
SQLserver:
and (select count(*) from sysobjects) >0 返回正常说明是mssql
MySQL:
and length(user())>0 返回正常说明是MySQL
4.其他方法
在mssql中可以调用substring。oracle则只可调用substr
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