The job to gather optimizer statistics for objects runs as part of the automatic maintenance window in yourdatabase instance. At a certain point of time， the maintenance window closes before the statistics are gatheredfor all objects. Which statement is true in this scenario（） The statistics collection continues until all objects are processed.。 The job is terminated and the statistics collected are restored to a time before the job started.。 This produces an error and the statistics collected are locked until the next time that the maintenancewindow is opened.。 The job is terminated and the statistics for the remaining objects are collected the next time that themaintenance window is opened。
教育过程的构成要素包括（） 教育途径。 教育内容。 教育者和受教育者。 教育手段。 教育环境。
You are working in an online transaction processing （OLTP） environment. You realize that the salary for an employee， John， has been accidentally modified in the EMPLOYEES table. Two days ago， the data was in the correct state. Flashback logs generated during last two days are available in the flash recovery area. Which option would you choose to bring the data to the correct state while ensuring that no other data in the same table is affected？（） perform pointintime recovery。 perform a Flashback Table operation to restore the table to the state it was in two days ago 。 perform a Flashback Database operation to restore the database to the state it was in two days ago。 perform Flashback Versions Query and Flashback Transaction Query to determine all the necessary undo SQL statements， and then use them for recovery。
对于特大型工程项目，可先编制（），待条件成熟时再编制施工总进度计划。 施工方案。 施工总进度规划。 人力计划。 资金计划。
In your production database， data manipulation language （DML） operations are executed on the SALES table.You have noticed some dubious values in the SALES table during the last few days. You are able to track users， actions taken， and the time of the action for this particular period but the changes in data are not tracked.You decide to keep track of both the old data and new data in the table along with the user information. Whataction would you take to achieve this task（） Apply fine-grained auditing.。 Implement value-based auditing.。 Impose standard database auditing to audit object privileges.。 Impose standard database auditing to audit SQL statements.。
以水泥、黏土为主要材料的初始塑性屈服强度大于50Pa的混合浆液是（）
