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[单选] Which statement is true regarding virtual private catalogs?()

A . A virtual private catalog owner can create a local stored script, and have read/write access to a global stored script.
B . The virtual private catalog owner cannot create and modify the stored scripts.
C . The set of views and synonyms that make up the virtual private catalog is stored in the schema of the RMAN recovery catalog owner.
D . To perform most of the RMAN operations, the virtual catalog owner must have the SYSDBA or SYSOPER privilege on the target database

You need to calculate the total of all salaries in the accounting department. Which group function should you use? () MAX。 MIN。 SUM。 COUNT。 TOTAL。 LARGEST。 美国的赫茨伯格是研究人的动机的又一代表人物,他提出了“双因素理论”。他的主要观点是,影响人的工作动机的有两类因素,这两类因素是() 刺激因素。 保健因素。 激励因素。 健康因素。 What is the purpose of the RMAN recovery catalog?()   It must be used because all RMAN-related backup and recovery metadata information is contained in it.。  It provides a convenient, optional, repository of backup- and recovery-related metadata.。  It provides the ability to store RMAN scripts for global use by any database that has access to the repository.。  It provides a means of storing all RMAN backup sets physically in an Oracle database server. 。  It provides the ability to store backup records for more than a year.。 What is true about joining tables through an equijoin? () You can join a maximum of two tables through an equijoin.。 You can join a maximum of two columns through an equijoin.。 You specify an equijoin condition in the SELECT or FROM clauses of a SELECT statement.。 To join two tables through an equijoin, the columns in the join condition must be primary key and foreign key columns.。 You can join n tables (all having single column primary keys) in a SQL statement by specifying a minimum of n-1 join conditions.。 当施工索赔争端提起后的()天(或工程承建合同文件另行规定的期限)内,仍未能达成一致意见,总监理工程师可以按合同文件规定做出自己的决定并通知业主和承建单位。 A.56 。 B.70 。 C.84 。 D.98。 Which statement is true regarding virtual private catalogs?()
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