The command prompt indicates which program you are using at a particular point in a session. ARC - Used for workspace management, data conversion and maintenance, and spatial analysis. ArcStorm provides the means for multiple users to access and manage large coverage databases. They are useful for representing geographic features such as points, lines, and areas, and are highly suited for data automation, associating descriptive attributes with features, and for many analytical operations.
Grids are highly suited for spatial modeling and raster editing.
Tables are used to store descriptive attributes in rows. Each attribute is stored in a field or item. In this way, feature attribute tables can be related or linked to geographic features. This concept is the foundation for the georelational data model. Picture images such as photos and scanned documents can describe features much like table attributes do.