Updated to include descriptions

chapter5/models/schema.yml

@@ -1,25 +1,22 @@
 
 version: 2
 
+# To Do: 
+# 1. Include some of the built in dbt tests into the columns.
+# 2. Create a custom dbt test to that will fail if any of the cohorts have more than 110 distinct adids.
+
 models:
   - name: adid_data
     columns:
       - name: adid
-        tests:
-          - unique
-          - not_null
+        description: "The advertisting ID for this data point. Every value in column should be a distinct ad_id. This value is required."
       - name: latitude
-        tests:
-          - not_null
+        description: "The latitude of the data point. This value is required." 
       - name: longitude
-        tests:
-          - not_null
+        description: "The longitude of the data point. This value is required." 
       - name: city
-        tests:
-          - not_null
+        description: "The city of the data point. This value is required." 
       - name: eventdate
-        tests:
-          - not_null
+        description: "The date of the data point. This value is required."  
       - name: cohort
-        tests:
-          - not_null
+        description: "The cohort of the adid. Theree are only 6 cohorts, each named either 'one', 'two', 'three', 'four', 'five', or 'six'. This value is required. Each cohort should have a maximum of 110 distinct adids."