OSA ArcView Shapefile Tutorial



FILETYPES COMPRISING A SHAPEFILE
One "Shapefile" is actually the cooperative work of several files
The files will all be named similarly differing only in the 3-letter filename extension at the end. The example shapefile described below is comprised of 8 files.
Essential number of shapefile constituent files is 3 (.dbf .shp .shx);
maximum is 8 (.aih .ain .avl .dbf .sbn .sbx .shp .shx).
13JH311_1980jun25_plus.shp always required Feature Geometry for each shape is stored in this file. You don't manually open or examine this file.
13JH311_1980jun25_plus.shx always required Index of Feature Geometry for each shape is stored in this file. You don't manually open or examine this file.
13JH311_1980jun25_plus.dbf always required Attribute Table for the shapefile "theme" is comprised of this dBase file. When the shapefile is added to a view, you can examine and edit this table using the 'Open Theme Table' button or menu Theme, menu item Table.
13JH311_1980jun25_plus.sbn required if present Part 1 of the Spatial Index of the features is comprised of this file. It's automatically created when certain processes occur (i.e., "Theme-On-Theme Selection," "Spatial Join," or "Create an Index" on the SHAPE field). You don't manually open or examine this file.
13JH311_1980jun25_plus.sbx required if present Part 2 of the Spatial Index of the features is comprised of this file. It's automatically created when certain processes occur (i.e., "Theme-On-Theme Selection," "Spatial Join," or "Create an Index" on the SHAPE field). You don't manually open or examine this file.
13JH311_1980jun25_plus.ain required if present Part 1 of the Attribute Index of the active fields in a Table or a Theme's Attribute Table is comprised of this file. It's automatically created whenever you "Link tables" and also when you "Create Index" for a field. You don't manually open or examine this file.
13JH311_1980jun25_plus.aih required if present Part 2 of the Attribute Index of the active fields in a Table or a Theme's Attribute Table is comprised of this file. It's automatically created whenever you "Link tables" and also when you "Create Index" for a field. You don't manually open or examine this file.
13JH311_1980jun25_plus.avl optional Legend for the shapefile can be stored in this file. If this file exists and is named similarly to the other files comprising the overall shapefile (as the files listed at left are named), then whatever legend setup is stored in this file will load automatically for this theme when the shapefile of this name is added to the View.




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By Heidi M. Lack, August, 2000.