What command is used to reset a database to a previous incarnation？（） reset incarnation。 incarnation reset。 reset database to incarnation。 reset database incarnation。 reset databse incarnation number。
差压阀装用在CW-200K型转向架上时，两空气弹簧的允许压差为（）。 （110±10）kPa。 （120±10）kPa。 （20±10）kPa。 （150±20）kPa。
You are a professional level SQL Server 2005 database administrator in an international corporation named Wiikigo. You are experienced in implementing high-availability solutions， monitoring the database server， and design deployment. In the company， you major job is the deployment， maintenance and support of Microsoft SQL Server 2005.You work as a database administrator for your company. A SQL Server 2005 database is utilized in your company. And a table named Inventory is contained by the database. A column named Price is included by the table. According to the company policy， you cannot reduce more than 10 percent the value in the Price column in any single database operation. Through many kinds of method， the company makes updates to the Price column. For instance， the utilization of ad hoc queries is one of the methods. Since you are the database administrator， you should confirm that this company policy takes its effect. Which action should be performed？（） A stored procedure should be created， and changes are disallowed by the procedure to the Price column that violates company policy.。 On the Price column， a check constraint should be created， and a specified minimum value is required by the check constraint.。 A trigger should be created， and changes are rolled back by the trigger to the Price column that violates company policy.。 On the Price column， a foreign key constraint is created to a table that valid prices are included.。
A customer has an existing high availability SAN environment with CLARiiON, which has been stable for 16 months. They have recently experienced several outages with their current storage systems. They need to purchase additional storage and have asked about tier 1 storage. They are concerned with connecting their existing storage and servers without trouble. Which resource should be consulted while developing the solution options?（） Disk Magic。 TPC for Data。 CLARiiON Procedure Generator。 System Storage Interoperability Center。
两只阻值相同的电阻串联后，其阻值（）。 等于两只阻值的乘积。 等于两只阻值的和。 等于两只阻值的二分之一。
按危机来源的不同，小企业可能遇到多种危机，除了（）。
