All the database users are presently connected to the database instance and working. The HR userhas opened three database sessions and executed the following command in one of his sessions： SQL> UPDATE persons SET ccode=’U031’ WHERE ccode=’U029’； 123 rows updated. SQL> DELETE FROM persons WHERE exp=’Y’； 3 rows deleted. The SYS user opens a new session after HR executed the above commands. Which sessions can seethe effect of the UPDATE and DELETE commands （） all sessions of the HR user only。 all sessions of the HR user and the SYS user。 the session of the HR user that executed the commands。 all the sessions for which the database users have access privilege to the PERSONS table。
几个试品并在一起进行绝缘电阻测量时，若测得结果为Rg，则每个试品的绝缘电阻都（）Rg。 小于。 等于。 大于。
农业产业化经营
简述幼儿园人力资源管理的过程。
Your Oracle10g database contains a table with a TIMESTAMP TO LOCAL TIME ZONE column. There are about two hundred column values for the column. You issued the following statement： SQL> ALTER DATABASE SET TIME_ZONE =’Europe/London’； What will be the result of issuing the above statement？（） The statement will be executed successfully， and a new time zone will be set for the database.。 The statement will be executed successfully， but a new time zone will not be set for the database.。 The statement will not be executed successfully because the SET TIME_ZONE clause can be used only with the ALTER SESSION statement.。 The statement will not be executed successfully because the ALTER DATABASE SET TIME_ZONE statement is used only when the database contains no table with the TIMESTAMP TO LOCAL TIME ZONE column.。
A customer needs a new Microsoft Windows 2003 Server. They are running an application that requires substantial memory. They would like a rack mountable system， which will support four Xeon processors with 2MB of L3 cache. Which of the following is the minimum configuration to satisfy the customer’s requirements？（）
