Oracle Application Express (APEX) native Bubble charts, using Oracle JET Data Visualizations, are showcased on this page. Explore the wide range of chart attributes declaratively available with our native charts, to format and customise the style of your charts. With plug-in based bar charts, you can display labels in a legend or with rollover labels on the bars. Native bubble charts define data items using x, y, and z values, making them useful for viewing relationships between 3 dimensions. However, 0 or negative values should not be used for the z value.