By default, the Data Browser/Editor starts in the View as Grid mode. This is the typical display that orients the data in a horizontal architecture. Generally, this mode is preferred for tables that have a large number of rows.
In this mode, the Up, Down, Left, and Right arrow keys will move the focus respectively.
To edit a column value while in the Edit mode, either double-click the field or press the [ENTER] key. Once editing of the value is complete, press the [ENTER] key again to commit the changes.