使用CREATE TRIGGER创建DDL触发器，执行触发器的对象可以是（ ）。 A: all server | table B: table | view C: database| table D: all server | database

rman列出归档文件备份集的命令是（）？ A: list backup of archivelog all B: list backup of database C: report schema D: recover database

rman核对归档文件的命令？（） A: crosscheck archivelog all B: crosscheck backup of database C: delete archivelog all D: list backup

The Structural Classification of Proteins (SCOP2) database (http://scop2.mrc-lmb.cam.ac.uk) organizes protein folds into four classes: __________________. A: allα B: allβ C: α/β (with α andβ segments interspersed or alternating) D: α+β (withα andβ regions somewhat segregated)

关闭所有打开的文件的命令是（ ） A: use B: close C: close database D: close all

Basic applications include all of the following except: A: web authoring B: word processors C: spreadsheet D: database management systems

The core of the database system is ____. A: database B: database<br/>application system C: database<br/>management system D: database<br/>administrator

A tabular database ,a distributed database and an object-oriented database are different databases.

The core of the database system is（）. A: Data model B: Database administrator C: Database D: Database management system

All FMS contain a navigation database. The navigation database contains the elements from which the flight plan is ______. A: constructed B: instructed C: obstructed D: restricted