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How do you fix the performance tuning problem How do you fix the problem with accidentally dropping objects on the production database How do you fix the problem of the complex code that is preventing any changes to three core applications

If you were to use this class to generate XML for your Web method, the output might look like the following:

private void Form1_Load(object sender, EventArgs e) { // Load the products table with data productsTableAdapter1.Fill(northwindDataSet1.Products); // Create a BindingSource to the Products table

Practice 1 Locate all the ad hoc SQL within your applications and move the code into stored procedures. Rewrite the application to use the stored procedures.

Suppose that you want to alter the element name AccountNumber to read ReferenceNumber. To do this renaming, you would first need to add references to the Sys tem.Xml.Serialization and System.IO classes such as the following:

//C# using System.Xml.Serialization;

Practice 1 Locate a block of nontrivial code that performs a calculation or returns a result set but does not modify the state of a database or SQL Server instance. Encapsulate the code in a function so that the code does not have to be re-created each time you need to reference this calculation.

using System.IO;

productsBindingSource = new BindingSource(northwindDataSet1, "Products");

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You would then need to create an instance of the XmlElementAttribute class and assign an alternative name for your element. You would then add your element to the

Practice 1 Create a DDL trigger to prevent anyone from accidentally dropping objects in your production environment.

XmlAttributes class and create an instance of the XmlAttributesOverrides class that can be used to specify the element to change. After the Vendor fields were assigned values, a new instance of the XmlSerializer class could be used to serialize the XML stream into an XML document. The following code could be used to accomplish this task:

ProductIDTextBox.DataBindings.Add("Text", productsBindingSource, "ProductID"); ProductNameTextBox.DataBindings.Add("Text", productsBindingSource, "ProductName"); }

Practice 1 Locate a complicated SELECT statement in an application. Create a view to encapsulate this complex SELECT statement. Modify the application to reference the view. Practice 2 Locate a deterministic view that is executed frequently and turn it into an indexed view. Observe the performance difference of the indexed view.

myElementAttribute.ElementName = "ReferenceNumber"

myAttributes.XmlElements.Add(myElementAttribute)

16. Double-click the Previous button and add the following code, which navigates back to the previous record in the data source of BindingSource.

The practice tests on this book s companion CD offer many options. For example, you can test yourself on just one exam objective, or you can test yourself on all the 70-433 certification exam content. You can set up the test so that it closely simulates the experience of taking a certification exam, or you can set it up in study mode so that you can look at the correct answers and explanations after you answer each question.

myOverrides.Add(GetType(Vendor), "AccountNumber", myAttributes)

Dim mySerializer As New XmlSerializer(GetType(vendor), myOverrides)

For details about all the practice test options available, see the section entitled How to Use the Practice Tests in the Introduction to this book.

' VB productsBindingSource.MovePrevious() // C# productsBindingSource.MovePrevious();

Ven.AccountNumber = "ADATUM0001"

Ven.Name = "A. Datum Corporation"

Programming Microsoft SQL Server with T-SQL User-Defined Stored Procedures, Functions, Triggers, and Views

Dim myWriter As New StreamWriter("Vendor.xml")

17. Double-click the Next button and add the following code, which navigates to the next record in the data source of BindingSource.

fter you have designed your database and application, you typically want to make sure that it can deliver the performance that your application users demand. This chapter covers what you can do to find performance problems in your database and how to solve the problems you uncover. Microsoft SQL Server 2008 is an extremely capable and efficient database engine, but it still requires you to do some performance tuning if you have a very large database, complicated queries, a high number of queries being served, or a combination of these factors.

mySerializer.Serialize(myWriter, Ven)

//C# // Create an instance of the XmlElementAttribute class XmlElementAttribute myElementAttribute = new XmlElementAttribute(); //Define the alternative element name myElementAttribute.ElementName = "ReferenceNumber"; //Create an instance of the XmlAttributes class XmlAttributes myAttributes = new XmlAttributes(); //Add the newly created Element attribute

' VB productsBindingSource.MoveNext() // C# productsBindingSource.MoveNext();

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