You can use the AutoCAD Trim and Break commands to split polygons. However, the Split command has many advantages over those methods. A split always results in a valid feature, and has special logic to deal with attributes automatically.
For example, if you are splitting a parcel, you can base the land value of the resulting parcels on a calculation that you define. You can also use automatic calculations. For example, you can assign the average value of all merged features to the resulting feature. You can divide the value of a feature evenly among all its split features.
Set rules for assigning properties after a split or merge operation.
Each property of the Parcels feature is listed under Feature Properties on the left. Two properties (Geom and FeatID) are generated by the data store, so you cannot set rules for them. If you select them, you can see the rules that the data store uses to create them.
|Property||Split rule||Merge rule|
|ACRES||Proportional Based On Area2D (Geom)||Sum|
|AREA||Proportional Based On Area2D (Geom)||Sum|
|IMP_VALUE||Proportional Based On Area2D (Geom)||Sum|
|LAND_VALUE||Proportional Based On Area2D (Geom)||Sum|
|NET_VALUE||Proportional Based On Area2D (Geom)||Sum|