data definition language (ddl)造句

例句与造句

1. The data definition language ( ddl ) part of sql permits database tables to be created or deleted
   数据定义语言( ddl )为sql中的一部分，可以让数据表建立或是删除。
2. It's difficult to find data definition language (ddl) in a sentence. 用data definition language (ddl)造句挺难的