If a backup is expired， which of the following is true？（） It can never be used for a restore/recover operation.。 Oracle will remove the backup set pieces from the flash recovery area.。 The backup has been used at least once to restore and recover the database.。 The backup is no longer valid because of a resetlogs operation.。 The physical backup set pieces are missing from the media.。
监理员应履行职责不含（）。 检查承包单位投入工程项目的人力、材料、主要设备及其使用运行状况。。 复核或从施工现场直接获取工程计量的有关数据并签署原始凭证。。 进行旁站监理工作并做好记录。。 负责本专业的检验批、分项、分部工程验收及相关隐蔽工程验收。。
The SAVE_AMT column in the ACCOUNTS table contains the balance details of customers in a bank. As part of the yearend tax and interest calculation process， all the rows in the table need to be accessed. The bank authorities want to track access to the rows containing balance amounts exceeding $200，000， and then send an alert message to the administrator. Which method would you suggest to the bank for achieving this task？（） implementing valuebased auditing by using triggers。 implementing finegrained auditing with audit condition and event handler。 performing standard database auditing to audit object privileges by setting the AUDIT_TRAIL parameter to EXTENDED。 performing standard database auditing to audit SQL statements with granularity level set to ACCESS。
A finance company needs to increase its storage but has run out of floor space in the data center.Currently they have two ESS 800 systems with a total of 125 TB of System z data. Which of thefollowing IBM System Storage products would allow them to replace the ESS 800 systems,increase their performance, reduce their floor space, and still allow them room to grow?（） N5200 。 DS5020 。 DS5300 。 DS8700。
接地中性线相色漆规定涂为（）色。 黑。 紫。 白。
通常，小企业成长期面临的最主要危机是（）
