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A user can have a default schema. When accessing an object in the default schema, the user does not have to specify the schema name; however, it is a good practice to do so. If the user has permission to create new objects, the objects will belong to the user s default schema unless specified otherwise. To access objects outside the default schema, the schema name must be used. Table 1-2 shows several objects along with the schema. Table 1-2. Schemas Found in AdventureWorks2008

server parameter specifies the SQL Server instance to which you want to connect: server = .\sqlexpress;

showing the DataGridView controls on Form5 and Form6. The sample for contrasting the two forms uses the following column values for the new row. title_id: AA1234 title: Book by Rick Dobson type: popular_comp pubdate: 12/15/2005

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Figure 13-17. Click the Edit Items link in the BindingNavigator Tasks window to modify the items that show on a BindingNavigator control. Figure 13-18 shows Form5 and Form6 side by side. Form5 is on the left. Both forms have the newly added row with a title_id column value of AA1234. However, Form5 on the left has its Delete control selected. By clicking this control, and then the Save Data control, a user of Form5 can delete the selected row successively from the local titles DataTable and then from the titles table in the pubs database. Notice that the BindingNavigator control in Form6 has no controls for modifying data. Therefore, Form6 demonstrates one appropriate way for allowing form navigation without form editing. This approach also reinforces your understanding of smart tags, and it exposes you to techniques for modifying the BindingNavigator control.

The next clause indicates that you should use Windows Authentication (that is, any valid logged on Windows user can log onto SSE):

Summary

Figure 13-18. Removing the controls for data modification from the BindingNavigator control is necessary to remove the ability to modify data in a database table.

integrated security = true;

Recall that DataTable elements within a data source have multiple form controls that can represent them when you drag them to a form Similarly, Column elements within a DataTable node have multiple form controls that can represent them when you drag them to a form While the default form control type for a Column element is a TextBox control, another selectable control type is a ListBox control When you drag a Column name from the Data Sources window after first designating that you want a ListBox on the form, the Windows Form Designer adds a BindingNavigation control and a Label for the ListBox control with the name of the column However, the ListBox control is initially unbound.

This chapter provided a quick tour of SQL Server. You learned how databases are structured and designed and how SQL Server uses indexes to efficiently return data. If you followed the instructions in this chapter, you now have an instance of SQL Server running on your workstation or laptop so that you have a place to practice the queries you are about to learn. In 2 you will get a chance to write your own queries. You ll learn the SELECT statement, the next step in your journey to T-SQL mastery.

You could alternatively have used sspi instead of true, as they both have the same effect. Other parameters are available. You ll use one later to specify the database to which you want to connect.

If you open the form without first configuring the ListBox, it appears empty! To make a ListBox control based on a column from a data source show values, you first have to configure the ListBox control Surprisingly, the ListBox is not automatically bound to the column that you drag from the Data Sources window to instantiate the ListBox control on the form The smart tag window for a ListBox offers one of two ways to configure the control You can override the default unbound status of a ListBox control by manually adding items to its Items collection Select the Edit Items link in the smart tag window to open a dialog box that assists with this task.

Next you created a connection (a SqlConnection object), passing it the connection string. This doesn t create a database session. It simply creates the object you ll use later to open a session:

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