单项选择题
A.Define the new column as NULL.Update the FriendlyName column to the same value as the productName column. Alter the FriendlyName column to be NOT NULL.
B.Define the new column as NOT NULL with a default value of ’Undefined.’
C.Define the new column as NULL. Use application logic to enforce the data constraint.
D.Define the new column as NULL with a default value of ’Undefined.’
单项选择题 You are creating a SQL Server 2005 database for a mortgage company. The database will support a new Web-based application that will handle up to 1，000 simultaneous users. This application must quickly display the results of calculation-intensive operations， such as calculating mortgage payments and amortization schedules. You need to ensure that the database processes calculations as quickly and efficiently as possible. What should you do？（）
单项选择题 You are creating a view to join the Customers and Orders tables in a SQL Server 2005 database. You need to ensure that the view cannot be affected by modifications to underlying table schemas. You want to accomplish this goal by using the least possible amount of overhead. What should you do？（）
多项选择题 TestKing.com uses a SQL Server 2005 database. This database contains a trigger named trg InsertOrders， which fires when order data is inserted into the Orders table. The trigger is responsible for ensuring that a customer exists in the Customers table before data is inserted into the Orders table. You need to configure the trigger to prevent it from firing during the data import process. You must accomplish this goal while using the least amount of administrative effort. Which two Transact-SQL statements can you use to achieve this goal？（）