Many engineers are familiar with the powerful set of editing tools provided by AutoCAD®, but have little experience with GIS applications and little time to learn them. GIS skills or tasks are primarily data-oriented, being concerned with tasks such as data preparation and cleanup, data management, and data sharing. These tasks also tend to be feature-oriented, dealing with real-world objects such as roads and parcels rather than geometric entities such as polylines and polygons. They may deal specifically with feature data that is kept in a central data store, such as an Oracle® database or SDF files. They may deal with geo-referenced data that is stored in DWG format. Or they may involve working with both feature data and DWG data. This sectioncollects together the most common and/or most important of these skills, and groups them together so that they are easy to learn.