Modifying indexes in shapefiles by updating a spatial index

ArcCatalog allows you to add, update, and delete a shapefile's spatial index. As features are added to or removed from the shapefile, its spatial index will be updated automatically. However, at times you may want to update the shapefile's spatial index manually. Having a current spatial index ensures that a high level of performance is maintained when drawing and working with the shapefile's features and that the shapefile's extent is accurate.

1. In ArcCatalog, click the shapefile to which you want to add a spatial index.
2. Click the File menu and click Properties.
3. Click the Index tab.
4. Click Update.
5. Click OK.

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