ou executed the command to create a password file in the database server： $ orapwd file=orapworcl entries=5 ignorecase=N Which statement describes the purpose of the above password file（） ["It records usernames and passwords of users when granted the DBA role.","It contains usernames and passwords of users for whom auditing is enabled.","It is used by Oracle to authenticate users for remote database administration.","It records usernames and passwords of all users when they are added to OSDBA or OSOPER operating system groups."]
（）是指人们为满足自身需要而对各种物质生活资料、劳务和精神产品的消耗。 ["生产消费","个人消费","广义的消费","狭义的消费"]
Given that the current directory is empty， and that the user has read and write permissions， and the following： Which statement is true？（） ["Compilation fails.","The file system has a new empty directory named dir.","The file system has a new empty directory named newDir.","The file system has a directory named dir， containing a file f1.txt.","The file system has a directory named newDir， containing a file f1.txt."]
Which two PL/SQL8 features are supported in Oracle Forms?（） ["methods ","object tables ","object columns ","collection types ","object as stored procedure parameter"]
成本模型的主要作用是（） ["基于成本确定IT服务的质量水平","用以分析并理解向顾客提供IT服务应分担的成本","向顾客收费以实现效益","监督成本的支出情况"]
缺陷的含义
