数据字典(DD)所定义的对象都包含于（　　）。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='57968' and id < 3663330 and id<>'3663330' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='57968' and id > 3663330 and id<>'3663330' order by id asc limit 5