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Combine features in the same layer
- Dissolve: A tool that combines multiple features within a layer into one based on a common attribute value. Online help.
- Merge features: Must be done in an editing session. Can combine selected features within a layer. Online help.
Combine layers (Merge and Append)
You can combine layers (e.g., if the tracts for each county are separate layers and you need a single tract layer for an entier metro area) to get one layer.
- You can use the Merge tool. The result is a new layer without modifying your original layers. Online help.
- You can also use the Append tool to simply add the features in a second layer to your target layer. Online help.