To make browsing for and symbolizing data more convenient, you can create layers from your geodatabase data and use these layers in ArcMap. Most of the layers you will need have been created for you; they are stored in the Layers folder in your tutorial directory. In this exercise you will see how to create new layers for the Laterals feature class.

After the layer is created you can change its symbology.

To modify the layer's properties, right-click the Water Laterals layer, then click Properties.

You can use the Layer Properties dialog box to modify many aspects of a layer, such as its visible scale and transparency. In this case, you will modify its symbology.

To change the layer's symbology, click the Symbology tab. By default, the Unique values classification based on the subtype field is used to symbolize the layer. You'll see how to modify the symbology of each subtype.

Double-click the colored line symbol next to one of the laterals to open the Symbol Selector dialog box. You can use this dialog box to set the symbol properties for each of the laterals subtypes.