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Multiple Active Result Sets is a new feature introduced with SQL Server 2005 that enables you to execute multiple statements through a single connection. MARS uses a connection attribute to indicate whether the connection can support this type of processing. Prior to this capability, you had to complete one batch before another one could be started. MARS enables you to execute one or more statements as you loop through the results of a separate result set all within the same connection. You might be thinking that MARS enables you to perform asynchronous or parallel processing, but this is not true. MARS enables you to interleave multiple result sets while the default result set remains open. MARS addresses a specific concern among developers that would receive transaction isolation level locks in their applications. MARS avoids this locking by enabling you to have multiple SqlDataReaders open on a single connection. In situations where transactions are used and multiple result sets must be processed, MARS can avoid the locking that might occur. MARS is ideal for a situation where you need to perform some operation as a set of results being read. For example, consider the following pseudo code, which is code represented as real English:

' VB Using ts1 As New TransactionScope(TransactionScopeOption.Required, _ New Timespan(0, 0, 30)) Using ts2 As New TransactionScope(TransactionScopeOption.Required, _ New Timespan(0, 0, 40)) ' Update database ' Sleep for 35 seconds ts2.Complete() End Using ts1.Complete() End Using

Specifies The members of the array will be generated as members of an XML array. The derived types that can be inserted into an array. Usually applied in conjunction with XmlArrayAttribute. The member will be serialized as an XML attribute. The member can be further disambiguated by using an enumeration. The field or property will be serialized as an XML element. The element name of an enumeration member. The property or field should be ignored when the containing class is serialized. This functions similarly to the NonSerialized standard serialization attribute. The class should be included when generating schemas (to be recognized when serialized).

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Create DataSet objects programmatically by instantiating new DataSet objects in code and adding DataTable and DataRelation objects, much like tables and rela tionships in a database. Create typed DataSet objects with the DataSet Designer and the Data Source Configuration Wizard. Typed DataSet objects are automatically created with TableAdapter objects that have methods that fill and update the data in the data tables of the DataSet. Untyped and typed DataSet objects can be created by dragging a DataSet object from the data Toolbox onto a form.

-- Modify the PK to be a non-clustered index. ALTER TABLE Test.SalesOrderHeader DROP CONSTRAINT PKSalesOrderHeader; ALTER TABLE Test.SalesOrderHeader ADD CONSTRAINT PKSalesOrderHeader PRIMARY KEY NONCLUSTERED (SalesOrderID); -- Create the clustered index. CREATE CLUSTERED INDEX CluIdx ON Test.SalesOrderHeader (TerritoryID, CustomerID);

It is in the rest of the values that the algorithm suites differ. Table 7-5 lists some of the other differences.

2. What steps must you take to limit access to a printer on a computer running Windows XP Professional

SELECT * FROM Credit;

Create a dynamic assembly. Create a dynamic module within a new assembly. Use the builder classes to build new types. Serialize a newly created assembly to disk.

Configuring Pens and Input Devices 711 Tablet PC Input Panel 714 Practice: Customizing Tablet PC Input Options 716 Lesson Summary 720 Lesson Review 721 Lesson 2: Configuring Power Options 723 Power Option Basics 723 Power Plans 724 Configuring Button Behavior and Security 728 Practice: Customizing Windows Vista Power Options 729 Lesson Summary 732 Lesson Review 732 Review 735 Summary 735 Key Terms 735 Case Scenarios 736 Case Scenario 1: Tablet PCs at Tailspin Toys 736 Case Scenario 2: Individualized Power Plans 736 Suggested Practices 737 Configure Tablet PC Software 737 Configure Power Options 737 Take a Practice Test 737 Answers 739 Glossary 793 Index 801.

1. Create a user account that will be used solely for creating profile templates. Use the following guidelines when creating the account:

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