基本信息
文件名称：数据库性、视图、安全性管理.pptx
文件大小：122.42 KB
总页数：34 页
更新时间：2026-04-03
总字数：约8.51千字
文档摘要
Integrity,Views,Security,and
CatalogsIntegrityConstraints:Specifiedwhenatableiscreated.Views:virtualtablestomakeiteasierforDBAtosetupdataforaccessbyusers.Basetablesvs.Viewtables.Itisameansbywhichsecurityanddataindependencyisbetterimplemented.
Integrity,Views,Security,and
Catalogs(Cont.)Security:Whogetstoaccessdata,howaccessiscontrolledbyDBA.Systemcatalogs:asetofmetadata.
IntegrityDBAperformsLogicaldatabasedesign,Tasks:(1)listingthedataitemstobekepttrackof(2)therulesofinterr