DOCSP-45367 Associations pt. 1 (#79)

Author: jordan-smith721

source/data-modeling.txt

@@ -19,6 +19,7 @@ Model Your Data
    Field Behaviors </data-modeling/field-behaviors>
    Inheritance </data-modeling/inheritance>
    Document Validation </data-modeling/validation>
+   Data Associations </data-modeling/associations>
    Optimize Queries With Indexes </data-modeling/indexes>
 
 In this section, you can learn how to model data in {+odm+}.
@@ -38,5 +39,8 @@ In this section, you can learn how to model data in {+odm+}.
 - :ref:`mongoid-modeling-validation`: Learn how to create document
   validation rules for your model classes.
 
+- :ref:`mongoid-associations`: Learn how to create and manage data
+  associations in your model classes.
+
 - :ref:`mongoid-optimize-queries-with-indexes`: Learn how to create and manage 
   indexes for your model classes.