You deploy a mobile messaging solution with Microsoft Exchange Server 2003 Service Pack 2. When the application is running， it must not be able to access protected registry keys. You need to ensure that the application meets the outlined requirement. What are two possible ways to achieve this goal？（） Use Microsoft Windows Mobile 5.0 Pocket PC Phone Edition operating system.。 Use Microsoft Windows Mobile 2003 for Pocket PC operating system.。 Use Microsoft Windows Mobile 5.0 for Smartphone operating system.。 Use Microsoft Windows Mobile 2003 for Smartphone operating system.。
线性回归模型的经典假设有（）。 参数的线性性。 常参数。 扰动项均值为零，同方差性。 解释变量或自变量之间不相关。 扰动项序列无关。
Sales details are being stored on a daily basis in the SALES_2007 table. A large amount of data is added to the table daily. To save disk space, you issued the following command: ALTER TABLE sales_2007 COMPRESS FOR ALL OPERATIONS; What would be the outcome of this command?（） It produces an error because data already exists in the table.。 It produces an error because compression can be enabled at table creation only.。 It compresses all data added or modified henceforth but the existing data in the table is not compressed immediately.。 It immediately compresses all existing data as well as new data, resulting from either fresh additions or modifications to existing data.。
You are working on a database that must be functioning 24 hours a day， 7 days a week. The database isconfigured in ARCHIVELOG mode. Which two options do you have for performing user-managed backups（） You can perform consistent backups only.。 You can perform a complete database backup without shutting down the database instance.。 You can back up data files only when all data files have the same SCN recorded in the control file.。 You can back up only those data files whose headers are frozen by using ALTER TABLESPACE BEGINBACKUP or ALTER DATABASE BEGIN BACKUP command。
不锈钢球型折角塞门橡胶密封件自制造完成之日起至组装使用前的贮存期不超过（）。 1个月。 3个月。 6个月。 1年。
The DBA has chosen to manage SGA and PGA memory separately in an OLTP database because of his unique knowledge of the application. Which of these are good starting points to use when configuring the maximum values for SGA and PGA，based on the amount of memory available on the system？（）
