diff --git a/code_thingies/dbtlearn/models/schema.yml b/code_thingies/dbtlearn/models/schema.yml
new file mode 100644
index 0000000..b1f9258
--- /dev/null
+++ b/code_thingies/dbtlearn/models/schema.yml
@@ -0,0 +1,27 @@
+version: 2
+
+models:
+  - name: dim_listings_cleansed
+    columns:
+      - name: listing_id
+        tests:
+          - unique
+          - not_null
+
+      - name: host_id
+        tests:
+          - not_null
+          - relationships:
+              to: ref('dim_hosts_cleansed')
+              field: host_id
+
+      - name: room_type
+        tests:
+          - accepted_values:
+              values: [
+                'Entire home/apt',
+                'Private room',
+                'Shared room',
+                'Hotel room'
+              ]
+
diff --git a/code_thingies/dbtlearn/tests/consistent_created_at.sql b/code_thingies/dbtlearn/tests/consistent_created_at.sql
new file mode 100644
index 0000000..2fb6893
--- /dev/null
+++ b/code_thingies/dbtlearn/tests/consistent_created_at.sql
@@ -0,0 +1,9 @@
+SELECT *
+FROM
+    {{ ref('fact_reviews') }} fr
+LEFT JOIN
+    {{ ref('dim_listings_cleansed') }} dl
+ON
+    fr.listing_id = dl.listing_id
+WHERE
+    fr.review_date < dl.created_at
\ No newline at end of file
diff --git a/code_thingies/dbtlearn/tests/dim_listings_minimum_nights.sql b/code_thingies/dbtlearn/tests/dim_listings_minimum_nights.sql
new file mode 100644
index 0000000..8dfaa20
--- /dev/null
+++ b/code_thingies/dbtlearn/tests/dim_listings_minimum_nights.sql
@@ -0,0 +1,5 @@
+SELECT *
+FROM
+    {{ ref('dim_listings_cleansed') }}
+WHERE
+    mininum_nights < 1