Beginning VB 2005 databases : from novice to professional by James Huddleston; et al

By James Huddleston; et al

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Once you’ve signed in, you’ll see a web page, as in Figure 2-21, which displays your registration key. 3. Copy the registration key, paste it into its field in the registration prompt window (see Figure 2-20), and when the Complete Registration button is enabled, click it. A thank-you window appears. Click Close. VBE now opens, as in Figure 2-22. qxd 11/2/06 3:13 PM Page 31 CHAPTER 2 ■ GETTING TO KNOW OUR TOOLS Figure 2-21. Registration key display Figure 2-22. qxd 32 11/2/06 3:13 PM Page 32 CHAPTER 2 ■ GETTING TO KNOW OUR TOOLS 4.

Retrieving Data A SQL query retrieves data from a database. Data is stored as rows in tables. Rows are composed of columns. In its simplest form, a query consists of two parts: • A SELECT list where the columns to be retrieved are specified • A FROM clause, where the table or tables to be accessed are specified ■Tip We’ve written SELECT and FROM in capital letters, simply to indicate they’re SQL keywords. SQL isn’t case sensitive, and keywords are typically written in lowercase in code. ” The distinction is conceptually important.

Txt file for a chapter. txt. qxd 11/7/06 12:08 PM Page 13 CHAPTER 1 ■ GETTING OUR TOOLS Figure 1-14. Creating the Northwind database This command executed the sqlcmd program, invoking it with two options. \sqlexpress, told sqlcmd to connect to the SQLEXPRESS instance of SSE on the local machine. sql and execute the T-SQL in it. ■Caution sqlcmd cannot connect to SSE unless the SSE instance is running. A Windows service named MSSQL$SQLEXPRESS should have been created when you installed SSE, and it should have been automatically started, so the SQLEXPRESS instance should already be running.

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