You executed this command to create a temporary table: SQL> CREATE GLOBAL TEMPORARY TABLE report_work_area (startdate DATE, enddateDATE, class CHAR(20)) ON COMMIT PRESERVE ROWS; Which statement is true about the rows inserted into the REPORT_WORK_AREA table during a transaction()
A. The rows stay in the table only until session termination.
B. The rows stay in the table only until the next transaction starts on the table.
C. The rows are visible to all current sessions after the transaction is committed.
D. The rows stay available for subsequent sessions after the transaction is committed
查看答案
随着收入的提高,哪个的需求量可能会下降?()
A. 图书
B. 米饭
C. 水果
D. 旅游
TDCS系统应保证24小时运行,不得擅自关闭()。
A. 电源
B. 主机
C. 系统
D. UPS
“腹有诗书气自华。”一句出自一首诗叫《和董传留别》,请问这是出自何人之手?