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A CLR table-valued function consists of two CLR methods: one method that manages the overall execution of the function and one method that is called for every row that is returned by the function The method that is run for each row returned by the function is not first run until the method that manages the function execution first starts executing yield return commands This is important to remember because any processing before the start of the yield return commands will have to be finished before any rows are returned from the the function CLR tablevalued functions are typically useful for querying objects other than tables, such as strings (by using regular expressions) or, for example, the file system Note that the processing done by a CLR function is not accurately included in the cost or page reads of the query..

USE master; GO ALTER DATABASE tempdb MODIFY FILE (NAME = <logicalname>, FILENAME = 'c:\test\tempdb.mdf'); GO ALTER DATABASE tempdb MODIFY FILE (NAME = <logicalname>, FILENAME = 'c:\test\templog.ldf'); GO

3. Stop and restart the SQL Server instance. Verify that the c:\test directory now has files created for tempdb.

The following MSDN articles discuss how to disable NetBIOS and SMB: msdn2.microsoft.com/ en-us/library/ms143696.aspx and msdn2.microsoft.com/en-us/library/ms143455.aspx.

You should generally avoid using cursors because of their negative effect on performance. They have such an effect partly because each execution of a FETCH statement in a cursor loop is similar in performance cost to executing a SELECT statement that returns one row. Another problem is that a DML statement is optimized as a single unit, while a cursor loop cannot be optimized in the same way. Instead, each item in the loop will be optimized and executed separately for each iteration of the loop.

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RAID 0 does not provide any fault tolerance, but it does provide good performance. RAID 1 provides full fault tolerance by maintaining a duplicate copy of all data. RAID 5 can withstand a single drive failure. A mirror of stripes configuration provides fault tolerance equivalent to RAID 5 with improved performance, whereas a stripe of mirrors provides maximum fault tolerance along with maximum performance. SANs can be configured as a file system, full disk, or combination of both. You can use the tempdb database for many operations that are not immediately visible, such as online index creation and online index rebuilds. Although tempdb is a temporary storage space, SQL Server cannot function with out it. To achieve maximum performance when tempdb is heavily used, you should consider moving tempdb to a dedicated set of drives as well as potentially adding additional files. Filegroups can be used to group database objects having similar usage patterns. Because filegroups can be restored while the database remains online, careful planning of the location of objects can significantly improve availability of a database.

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6. Consider restricting the SQL Server so that it will communicate only with hosts it can negotiate an IPSec connection with. 7. Configure Web applications that interact with SQL Server to do so using an encrypted Secure Sockets Layer (SSL) connection.

You should try to rewrite cursor logic into one or more set-based statements (SELECT, INSERT, UPDATE, DELETE). If you must use cursors, consider implementing the logic using a CLR stored procedure or a table-valued user-defined function instead (depending on the functionality you need).

7. In the Password and Confirm Password text boxes, type the password you have chosen. 8. Clear the User Must Change Password At Next Logon check box. 9. Select the Password Never Expires check box. 10. Click Create. 11. Click Close.

In this exercise, you create a Windows group named SQLManagers and place the SQLAdmin account in it. 1. In Local Users And Groups, right-click the Groups folder and then choose New Group. 2. In the Group Name text box, type SQLManagers. 3. Click Add. 4. In the Select Users dialog box, type SQLAdmin and then click OK. 5. In the New Group dialog box, click Create and then click Close.