diff --git a/models/base/schema.yml b/models/base/schema.yml
index ba0d9108..9eb0afb3 100644
--- a/models/base/schema.yml
+++ b/models/base/schema.yml
@@ -18,7 +18,10 @@ models:
         description: "The xAPI object identifier"
       - name: course_id
         data_type: string
-        description: "The course identifier"
+        description: "The fully-qualified course identifier URL"
+      - name: course_key
+        data_type: String
+        description: "The course key for the course"
       - name: org
         data_type: string
         description: "The organization that the course belongs to"
diff --git a/models/instance/schema.yml b/models/instance/schema.yml
index 475f84c5..dd1298f7 100644
--- a/models/instance/schema.yml
+++ b/models/instance/schema.yml
@@ -14,9 +14,9 @@ models:
   - name: fact_instance_events
     description: "A materialized view summarizing site-wide xAPI event activity"
     columns:
-      - name: emission_hour
-        data_type: datetime(64)
-        description: "Time of summary, rounded to the nearest hour"
+      - name: emission_day
+        data_type: datetime
+        description: "Time of summary, truncated to the day"
       - name: events_cnt
         data_type: int
         description: "The number of xAPI events that occurred in the given hour"
@@ -24,9 +24,9 @@ models:
   - name: fact_instance_actors
     description: "A materialized view summarizing site-wide user activity"
     columns:
-      - name: emission_hour
-        data_type: datetime(64)
-        description: "Time of summary, rounded to the nearest hour"
+      - name: emission_day
+        data_type: datetime
+        description: "Time of summary, truncated to the day"
       - name: actors_cnt
         data_type: int
         description: "The number of xAPI actors active in the given hour"
@@ -34,12 +34,15 @@ models:
   - name: fact_instance_enrollments
     description: "A materialized view for summarizing site-wide enrollment activity"
     columns:
-      - name: emission_hour
-        data_type: datetime(64)
-        description: "Time of summary, rounded to the nearest hour"
+      - name: emission_day
+        data_type: datetime
+        description: "Time of summary, truncated to the day"
       - name: course_name
         data_type: String
         description: "The name of the course"
+      - name: course_key
+        data_type: String
+        description: "The course key for the course"
       - name: enrollment_mode
         data_type: string
         description: "The name of the enrollment mode (ex: audit, honor)"