" --Database Initial size
filegrowth =1mb, - If the initial size is not enough, it will grow by 1mb each time. maxsize = 20mb --The upper limit of database space, fill in unlimited to mean no limit}log on{ name='name_log', filename = "c:xx name_log.ldf" " size = 5mb, filegrowth = 10%, - There are two ways to grow, one is to grow according to a fixed size, and the other is to grow according to a percentage! maxsize = 10mb} 2. Delete the database can only use drop drop database name