实例
create database db on (name=db51,filename='D:\xxx\db51.mdf',size=100,maxsize=200,filegrowth=20 ), (name=db52,filename='D:\xxx\db52.ndf',size=100,maxsize=200,filegrowth=20 ), (name=db53,filename='D:\xxx\db53.ndf',size=100,maxsize=200,filegrowth=20 ) log on (name=db5log1,filename='D:\xxx\db5log1.ldf' ), (name=db5log2,filename='D:\xxx\db5log2.ldf',size=50,maxsize=200,filegrowth=20 )