In this paper, we describe a data organization and axis grouping technique for managing parallel coordinate plots. A database visualization model is created as an intermediary between the data and the visualization. On the visualization side, axes within a parallel coordinate plot are put into groups which can be represented by a new axis in the plot, while the members of the group are hidden. Methods are presented for building these groups and displaying their axes, each with their own advantages and disadvantages. Lastly, a working system which uses these techniques to visualize data from a database is presented.