You are responsible for managing the database schema for an order entry application in a SQL Server 2005 database. After a design review, a member of the development staff asks you to add a new column named CommissionRate to the Product table. Because the actual commission rates for all products are not known at this time, each product has a default commission rate of 12 percent. The rate can be modified as necessary. You add the new column. You need to configure the table to assign the default value as efficiently as possible. What should you do?（） Create an INSERT trigger to assign the default value to each item in the table. 。 Create a CHECK constraint to validate the data and to assign the default value to each item in the table. 。 Create an UPDATE trigger to update the default value for each new item in the table. 。 Create a DEFAULT constraint to assign the default value specifying the WITH VALUES argument.。
下列不属于网上银行承担相应民事责任的方式的是（） 返回本金，支付利息。 偿还余额，补足差额。 赔偿相关损失。 赔礼道歉。
To reference existing ASM files， you need to use a fully qualified ASM filename. Your development database has a disk group named DG2A， the database name is DEV19， and the ASM file that you want to reference is a datafile for the USERS02 tablespace. Which of the following is a valid ASM filename for this ASM file？（） dev19/+DG2A/datafile/users02.701.2。 +DG2A/dev19/datafile/users02.701.2。 +DG2A/dev19/users02/datafile.701.2。 +DG2A·701.2。 +DG2A/datafile/dev19.users.02.701.2。
安全链是一个“串联”硬接点回路，它用于触发紧急停机1和紧急停机2，那么在联合动力UP82-1.5MW安全链种包括：（） 机舱内紧急停机按钮；。 塔架底部紧急停机按钮；。 转子超速传感器；。 机舱振动传感器；。 变桨系统紧急停机触点（接触器）；。 PLC控制器触点（接触器）；。 解缆限位开关。。
A team of programmers is reviewing a proposed API for a new utility class. After some discussion,they realize that they can reduce the number of methods in the API without losing any functionality.If they implement the new design, which two OO principles will they be promoting?（） Looser coupling。 Tighter coupling。 Lower cohesion。 Higher cohesion。 Weaker encapsulation。 Stronger encapsulatio。
You have two database servers SEMP and SACCT. The database in the SEMP server maintains the employeeinformation and the database in the SACCT server maintains the accounts payable information. The employeessubmit the expense reports to the accounts payable department. A user of the accounts payable databasewants to extract the employee information from the database in the SEMP server for cross-verification.
Whichschema object enables the user to access the information from the remote database（）
