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2. Under System Variables, click New. Windows XP Professional displays the New System Variable dialog box. 3. In the Variable Name text box, type WinXPdir. 4. In the Variable Value text box, type the path to the folder containing the Windows XP Professional system files, for example, C:\Windows. If you are not sure of the path to the Windows XP Professional system files, use Windows Explorer to locate the Windows directory. 5. Click OK. You are returned to the Environment Variables dialog box. 6. Scroll through the System Environment Variables and verify that WinXPdir is listed. 7. Click OK to close the Environment Variables dialog box, and then click OK to close the System Properties dialog box. 8. Close the Performance And Maintenance window. 9. From the Start menu, click Run. 10. In the Open text box, type cmd, and then click OK. 11. What does typing the cmd command do

A query must be prepared in application code before execution. So, querying involves several distinct steps:

12. At the command prompt, type set | more, and then press ENTER. The list of current environment variables is displayed, and WinXPdir is listed. (You might need to press SPACEBAR to scroll down to see WinXPdir listed.) 13. If necessary, type c: and then press ENTER to switch to the drive on which you installed Windows XP Professional. (Adjust the drive letter, if necessary.) 14. Type cd\ and then press ENTER to switch to the root directory. 15. Type cd %WinXPdir%, and then press ENTER. You should now be in the Windows directory. 16. Type exit and press ENTER to close the command prompt.

In this exercise, you assign a paper type (form) to a paper tray so that when users print to a specified form, the print job is automatically routed to and adjusted for the correct tray. 1. Log on with the user account you used to create the HP Color LaserJet 4550 PS printer in 11 or with any user account that is a member of the Administrators group. 2. Click Start, and then click Printers And Faxes. 3. Right-click the HP Color LaserJet 4550 PS printer, and then click Properties. 4. In the HP Color LaserJet 4550 PS Properties dialog box, on the Device Settings tab, click Tray 2, and then select Legal. 5. Click Apply and leave the HP Color LaserJet 4550 PS Properties dialog box open for the next exercise.

Create the query, with any arbitrary restriction or projection of data that you want to retrieve. Bind runtime arguments to query parameters; the query can be reused with changing settings. Execute the prepared query against the database and retrieval of data. You can control how the query is executed and how data should be retrieved into memory (all at once or piecemeal, for example).

In this exercise, you set up a separator page to print between documents. You use the Sysprint.sep separator page that ships with Windows XP Professional. This separator page includes the user s name and the date and time the document was printed. 1. On the Advanced tab of the HP Color LaserJet 4550 PS Properties dialog box, click Separator Page. 2. In the Separator Page dialog box, click Browse. 3. Windows XP Professional displays a Separator Page dialog box that lists the contents of the System32 folder, which contains the separator pages that ship with Windows XP Professional. This dialog box also allows you to search in additional folders. Select Sysprint.sep, and then click Open. 4. Click OK. Windows XP Professional is now set to print a separator page between print jobs. 5. Leave the Properties dialog box open for the next exercise.

12-18

Hibernate and Java Persistence offer query interfaces and methods on these interfaces to prepare and execute arbitrary data retrieval operations.

12

In this exercise, you practice taking ownership of a printer. 1. On the Security tab of the Properties dialog box, click Advanced. 2. In the Advanced Security Settings For HP Color LaserJet 4550 dialog box, on the Owner tab, in the Change Owner To list, click Administrators to become the owner of the printer. 3. If you actually wanted to take ownership, you would click Apply, but for the purposes of this exercise, click Cancel and leave the ownership unchanged. 4. Click OK to close the Properties dialog box.