Rows correspond to shapes.
Here's one thing your data must do: Each row must describe a shape. For example, if each row describes a piece of computer equipment, that data would work with a diagram that contained shapes for computer equipment. If each row describes an employee with the department, office number, and so on, then that data would work if you imported it into an org chart containing employee shapes. Rows describing processes would work for a flow chart, and so on.