Assume that you are building a mapping program. You have the a United States map that contains interstate highways. You also have six regional maps that contain interstate highways and other major highways. You also have a map of each state that contains all the roads in the state. All of your maps store the geometry data in a column called GEOMETRY. The extents of these layers are -90 to 90 and -180 to 180. All of these layers are indexed. This example refers to the US map as US, the regional maps as REGION and the state maps as STATE.
You first analyze the US layer, and tune the index as recommended by the Spatial Index Advisor. Next, you analyze the REGION layers, following the process for analyzing a group of layers. All these layers should have the same tiling level and number of tiles. Finally, you analyze the STATE layers, again following the process for analyzing a group of layers.
See also: Usage scenarios, Main help topics (outline)