You are maintaining your database in Oracle10g. While performing an incremental backup of the database， you want to back uponly those blocks that have changed since the last backup. Which file will you create to increase the performance of the backup operation while performing the incremental backup of the database？（） redo log files。 password file。 control file。 change tracking file。
自然垄断产业
药理学（） 是研究药物代谢动力学的科学。 是研究药物效应动力学的科学。 是研究药物与机体相互作用及其作用规律学科。 是与药物有关的生理科学。 是研究药物的学科。
Which statement is true？（） The time to find the value from HashMap with a Person key depends on the size of the map.。 Deleting a Person key from a HashMap will delete all map entries for all keys of type Person.。 Inserting a second Person object into a HashSet will cause the first Person object to be removed as a duplicate.。 The time to determine whether a Person object is contained in a HashSet is constant and does NOT depend on the size of the map.。
什么是案例？
You have been tasked with creating Business Events for an E-Business Suite workflow project. Whatwould you use to create your Business Events?（）
