单项选择题 Evaluate the following block of code: What is the outcome of the above code?（）

多项选择题 USER_DATA is a nonencrypted tablespace that contains a set of tables with data. You want to convert all existing data in the USER_DATA tablespace and the new data into the encrypted format. Which methodswould you use to achieve this?（）

单项选择题 Which statement is true about a running session that belongs to the online transaction processing (OLTP) group?（）