Start the Data Dictionary in one of the following ways:
At the command line, enter the following command:
pro -p dict.p
From any of the Application Development tools, chooseData Dictionary > Tools.
In the Procedure Editor, type dict. Then choose Run > Compile or press GO.
The Procedure Editor opens the Data Dictionary, as shown in the following figure:
Figure 1. Data Dictionary window
Once open, the Data Dictionary displays the name of the working database in the lower-left corner of the window (if you have at least one connected database). You can have multiple databases connected at any time, but only one is the current, working database. To select an existing working database, choose Database > Select Working Database from the menu bar.