Beginning Web Development, Silverlight, and ASP.NET AJAX

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CHAPTER 4 ■ DATA BINDING WITH ASP.NET
Your next step is to set the authentication mode for SQL Server (see Figure 4-6).
There are two ways you can log into the database. You can use Windows authentication
only when your Windows sign-on credentials are used to access the database, and you
can use Mixed Mode authentication when SQL Server has its own set of credentials.
Windows authentication is considered the most secure and direct method of authentication,
and for this book, I recommend that you use it. You also have the option of using
Mixed Mode authentication for greater flexibility. Should you do this, you will have to
configure the sa login, which is the credential set for the SQL Server administrator.
Figure 4-6. Configuring the SQL Server authentication mode
The next screen allows you to set the configuration options (see Figure 4-7). There
are two main options that you can set. The first is Enable User Instances, which if set will
allow users that do not have administrative access to run separate instances of the SQL
Server Express engine. The second, if set, will add the user that is installing the database
as a SQL Server administrator. You can see this in Figure 4-7.