Introducing Geographic Information Systems with ArcGIS: A Workbook Approach to Learning GIS, 3rd Edition

A Warning: Changes Made through Topology Are Permanent

Please note that the changes made to the Water_Lines feature class during validation cannot be reversed, except by editing. It is important to keep a copy of the original of any feature class involved in a validation as you did with WL_Copy, in case the results are not what you want.

Exercise 4-9 (Review)

Checking, Updating, and Organizing Your Fast Facts File

The Fast Facts File that you are developing should contain references to items in the following checklist. The checklist represents the abilities to use the software you should have upon completing Chapter 4.

• To make ArcToolbox appear
• The categories of tools available in ArcToolbox are
• Two lines may cross in different ways. They are
• Sometimes you will see two tools that appear to do the same things. That’s because they operate on
• To find a particular tool
• Help for ArcToolbox can be found in several ways:
• To label features
• “Unable to obtain schema lock” means
• The row identifiers in the attribute tables for polygons in geodatabase feature classes, shapefiles, and coverages are different in these ways:
• If two numbers are in theory the same the computer may calculate them to be different because
• To participate in a geodatabase topology the feature classes must be part of a
• The objects with lower feature class ranks are
• Topology rules are defined in the software. These rules define
• Since validation of a topology may move objects, it is a good idea to

1ArcToolbox ...