单项选择题
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?（）
A. Create an INSERT trigger to assign the default value to each item in the table.
B. Create a CHECK constraint to validate the data and to assign the default value to each item in the table.
C. Create an UPDATE trigger to update the default value for each new item in the table.
D. Create a DEFAULT constraint to assign the default value specifying the WITH VALUES argument.
相关考题
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单项选择题
YouareresponsibleforimplementingmaintenancejobsonaSQLServer2005databaseserver.CertainjobsruneverySundayandotherjobsrunatthebeginningofeverymonth.Youneedtoschedulethejobsinthewaythatusestheleastamountofadministrativeeffort.Whatshouldyoudo?（）
A. Create a job schedule that runs every Sunday. Assign weekly tasks to this schedule. Create a second schedule that runs on the first day of every month. Assign monthly tasks to this schedule.
B. Create a job for each task that runs once a day. Use a Transact-SQL statement to check the date and day of the week. If the day is either a Sunday or the first day of the month, execute the code.
C. Create a job schedule that runs once a day. Assign jobs to this job schedule. If the day is either a Sunday or the first day of the month, execute the jobs.
D. Create a job for each task that runs once a week on Sunday. Add a second job schedule that runs the job on the first of the month. -
多项选择题
YourcompanyusesSQLServer2005.Usersreportthatreportexecutionisslow.Youinvestigateanddiscoverthatsomequeriesdonotuseoptimalexecutionplans.Youalsonoticethatsomeoptimizerstatisticsaremissingandothersareoutofdate.Youneedtocorrecttheproblemsothatreportsexecutemorequickly.WhichtwoTransact-SQLstatementsshouldyouuse?（）
A. DBCC CHECKTABLE
B. ALTER INDEX REORGANIZE
C. UPDATE STATISTICS
D. CREATE STATISTICS
E. DBCC SHOW_STATISTICS
F. DBCC UPDATEUSAGE -
单项选择题
A support engineer reports that inserting new sales transactions in a SQL Server 2005 database results in an error. You investigate the error. You discover that in one of the databases, a developer has accidentally deleted some data in a table that is critical for transaction processing. The database uses the full recovery model. You need to restore the table. You need to achieve this goal without affecting the availability of other data in the database. What should you do?（）
A. Back up the current transaction log. Restore the database with a different name and stop at the point just before the data loss. Copy the table back into the original database.
B. Back up the current transaction log. Restore the database to the point just before the data loss.
C. Restore the database from the existing backup files to a time just before the data loss.
D. Restore the database to the point of the last full backup.
