You are a DBA of your company. You created a database named SALES on an Oracle 10g instance. You have defined an index named INDEX1 on the database table named INVENTORY. Users are complaining that queries accessing the INVENTORY table are running slow. U

第1题：

You are a database administrator for your company. The company uses a SQL Server 2005 database that includes a table named Inventory. The table contains a column named Price. A company policy states that the value in the Price column cannot be decreased by more than 10 percent in any single database operation. Updates to the Price column are made by various means， including by using ad hoc queries. You need to ensure that this company policy is enforced. What should you do？（）

• A、Create a trigger that rolls back changes to the Price column that violate company policy.
• B、Create a stored procedure that disallows changes to the Price column that violate company policy.
• C、On the Price column， create a check constraint that requires a specified minimum value.
• D、On the Price column， create a foreign key constraint to a table that contains valid prices.

第2题：

In your test database， you have created the ORDERS table as an index/x7forganized table （IOT）. To facilitate faster querying， you have created a mapping table and a bitmap index on the ORDER_FILLED column. You observe that the query performance degrades when users perform a large volume of transactions.  While investigating the reason， you find that the mapping table segment is fragmented， leading to poor performance. Which option would you use to defragment the mapping table without affecting the original table data？（）

• A、export and import the mapping table
• B、drop and re­create the mapping table
• C、truncate the mapping table and reinsert the values
• D、use the ALTER TABLE .. REBUILD command to defragment the mapping table

第3题：

Flashback Database is enabled in your Oracle 10g database. One of your database users erroneously purged an important table residing in his schema. The table was purged sometime between 10：00 P.M. and 10：30 P.M. The next day， you decide to flash back the database. Before you flash back the database， you want to ensure that you have all the necessary flashback data. Which dynamic performance view must you use to determine whether you have the required flashback data to recover the purged table？（）

• A、 V$DATABASE
• B、 V$UNDOSTAT
• C、 V$FLASHBACK_DATABASE_LOG
• D、 V$FLASHBACK_DATABASE_STAT

第4题：

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、A stored procedure should be created， and changes are disallowed by the procedure to the Price column that violates company policy.
• B、On the Price column， a check constraint should be created， and a specified minimum value is required by the check constraint.
• C、A trigger should be created， and changes are rolled back by the trigger to the Price column that violates company policy.
• D、On the Price column， a foreign key constraint is created to a table that valid prices are included.

第5题：

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. There is a database named Inventory on a SQL Server 2005 computer， and the computer is named SQL01. SQL01 is utilized to aggregate manufacturing part numbers from your company’s trading partners. And the company stores the manufacturing part numbers in the Product table in the Inventory database. The company requests the users to deliver data as text files from each trading partner to SQL1 every night. The data should be imported， and no duplicate manufacturing part numbers should exist in the data which is imported from the text files， and the text files are stored in the Inventory database on SQL01. You should cut the effect on your company’s trading partners and your IT department to the least.  Which action should you perform？（）

• A、First， you should import the data from each text file into a staging table. Second， you should write a query to have a HAVING clause contained so as to migrate replicate values before results are inserted into the Product table.
• B、First， you should make sure that each text file is stored in an Extensible Markup Language （XML） file. Second， you should utilize Extensible Stylesheet Language Transformations （XSLT） to automatically migrate replicates before data is imported into the Product table.
• C、First， you should make sure that the unique key values for manufacturing part numbers are utilized by each of your company’s trading partners utilizes. Second， you should import the text files into the Product table.
• D、You should place a unique index on the PartNum column.

第6题：

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 computer is managed by you， and a database named Customers is included by the SQL Server 2005 computer. A table named CustInfo is included by the database. An identity column named CustID and an nvarchar column named CustName are included by the table. According to the company requirement， rows which duplicate CustName values are included should be moved from the CustInfo table every year. However， the company requests to have rows removed from the CustInfo table after the rows have been manually examined and verified as being duplicates. Since you are the technical support， you are required to think out a method to have potential duplicate rows identified for manual examination. The minimum amount of administrative effort should be utilized.  Which action should be performed to finish the task？（）

• A、A trigger should be created for the CustInfo table so as to roll back INSERT queries that duplicate data is included.
• B、A new unique index should be created on the CustName column. And then， IGNORE_DUP_KEY = ON should be specified when creating index.
• C、On the CustName column， a foreign key constraint should be created， and a distinct list of CustName values is referenced by the foreign key constraint.
• D、A SELECT INTO query should be utilized， and GROUP BY and HAVING clauses should be included by the query to create a new table that contains duplicate rows from the CustInfo table.

第7题：

You work in a company which is named Wiikigo Corp. The company uses SQL Server 2008. You are the administrator of the company database. Now you are in charge of a SQL Server 2008 instance. There is a database named Service in the instance. There is a database user who is named ServiceGreatUser. A SQL Server login named ServiceGreatLogin maps to ServiceGreatUser in the Service database. According to the requirement of the company CIO, the database user can only perform the two tasks below: the database user executes all stored procedures that currently exist in the Sales database and executes all stored procedures that will be created in the Sales database. So what should you do to ensure this? （）

• A、ServiceGreatUser should be added to the appropriate fixed database roles. 
• B、You should assign the appropriate object-level permissions to ServiceGreatUser 
• C、You should assign the appropriate server-level permissions to ServiceGreatLogin 
• D、You should assign the appropriate database-level permissions to ServiceGreatUser

第8题：

You work in a company which is named Wiikigo Corp. The company uses SQL Server 2008. You are the administrator of the company database. Now you are in charge of a SQL Server 2008 instance. There is a database named Dworks in the instance. The Dworks database has a table named Orderthings. The Orderthings table is partitioned on the OrderId column. The first partition contains integer values greater than 100,000, while the second partition contains integer values between 1 and 100,000. You have to add a new partition. The new partition should contain integer values greater than 200,000. What should you do? （）

• A、A new partition function should be created 
• B、You should change the existing partition scheme 
• C、You should use a Merge clause to change the existing partition function 
• D、You should use a Split clause to change the existing partition function 

第9题：

第10题：

第11题：

第12题：

第13题：

You are responsible for maintaining a SQL Server 2005 database. Business analysts in the company routinely use a view named v CustomerSales to join the Customers and Sales tables in the database. They use the view to aggregate total sales by customer by month. You need to increase the performance of the view. What should you do？（）

• A、Update the view to use an outer join between the Customers and Sales tables.
• B、Create a clustered index on the v CustomerSales view.
• C、Create two separate views that do not contain any joinsone view named Customers for the Customers table and another one named v Sales for the Sales table.
• D、Create a stored procedure for the business analysts that uses the v CustomerSales view.

第14题：

You have created an Oracle 10g database named SALES， which will be used by an application named SalesOrders. Users of the SalesOrders application complain that application response time is slow when they generate reports. The SalesOrders application accesses a table that contains 10 million rows. You decide to create an index on this table using the NOLOGGING option so that the index creation process is completed in the least amount of time. Which of the following is NOT true about an index created with the NOLOGGING option？（）

• A、 The index can be changed from NOLOGGING to LOGGING
• B、 The index cannot be recovered even in the ARCHIVELOG mode.
• C、 The index can only be created if the base table is created with the NOLOGGING option.
• D、 The index can be recovered if you perform a backup after the CREATE INDEX statement.

第15题：

You work in a company which is named Wiikigo Corp. The company uses SQL Server 2008. You are the administrator of the company database. Now you are in charge of a SQL Server 2008 instance. There is a database named Dworks in the instance. The Dworks database has a table named Orderthings. According to the company requirement, you have to export all data from the Orderthings table to a file. During the export, you must make sure that the data export process is saved for reuse and a Microsoft Office Open XML document format is used. What should you do?（）  

• A、You should run the bulk copy program utility along with an output file and no format file
• B、You should run the SQLCmd utility and save the output to a file
• C、You should run the SQL Import and Export Data Wizard and save the output to a file.
• D、You should run the bulk copy program utility along with a format file and an output file.

第16题：

You work in a company which uses SQL Server 2008. You are the administrator of the company database. Now you are in charge of a SQL Server 2008 instance. There is a database named named Dworks in the instance. The Dworks database has a table named Bills which contains several indexes and a great amount of rows. An enterprise Web environment is supported by the database. Onthe Bills table 28% of the indexes have been fragmented. You have to defragment the indexes， making sure that you reduce the effect on database availability to the least.  In the ALTER INDEX statement， which option should be included？（）

• A、Sort in tempdb 
• B、Online 
• C、Fill factor 
• D、Pad index 

第17题：

You work in a company which uses SQL Server 2008. You are the administrator of the company database. Now you are in charge of a SQL Server 2008 instance. There is a database named DB1 in the instance. In the Services schema， There is a table named Service.Table. The Services.Table has to be moved from the Sales schema to a new schema named Costs. In the options below， which Transact-SQL statement should you execute？（）

• A、ALTER TABLE Service.Table SWITCH TO Costs.Table1; 
• B、ALTER SCHEMA CostsTRANSFER Service.Table; 
• C、ALTER USER Service WITH DEFAULT_SCHEMA = Costs; 
• D、ALTER AUTHORIZATION ON Service.Table1 TO Costs;

第18题：

You work in a company which is named Wiikigo Corp. The company uses SQL Server 2008. You are the administrator of the company database. Now you are in charge of a SQL Server 2008 instance. There is a database which is named Sellings in the instance. The Sellings database contains a table named Productions. The table is used to stores information about all types of products. The Productions table is often queried by users on the basis of the RadioSize column. The RadioSize column contains the NULL value for all products other than Radios. Currently no index exists on the RadionSize column. According to the requirement of the company CIO, you have to optimize the query performance and reduce the effect on the disk space to the least. So what action should you perform to achieve this goal?（）  

• A、On the Products table, you should create a view. 
• B、On the RadioSize column, you should create a clustered index 
• C、On the RadioSize column, you should create a filtered index 
• D、On the RadioSize column, you should create a unique clustered index

第19题：

You work in a company which uses SQL Server 2008. You are the administrator of the company database. Now you are in charge of a SQL Server 2008 instance. There is a n On-Line Analytical Processing （OLAP） database named in the instance. The database contains a dimension table named Clients. Ever hour backup of data of the Clients table is performed. But the Clinets table contains redundant data. You must keep the disk space used to store the Clients table.  In the options below， which compression technology should you use？（）

• A、You should use row compression 
• B、You should use page compression 
• C、You should use backup compression 
• D、You should use windows NTFS file system compression

第20题：

第21题：

第22题：

第23题：