Using PowerPivot in Excel 2013 - Business Intelligence in Microsoft SharePoint 2013 - page 103

FIGURE 4-7 The Import Data dialog box.
Another way to create a Data Model is by selecting multiple tables. On the Select Database And
Table page of the wizard, select the Enable Selection Of Multiple Tables check box (see Figure 4-8).
Choose a table, click Select Related Tables, which instructs the xVelocity engine to find tables that
have relationships with the one you've selected, and then click Finish.
FIGURE 4-8 Selecting multiple tables from a database.