Completed the schema for the model

models/intermediate/core/schema.yaml

@@ -816,39 +816,44 @@ models:
         description: If the deal has had a booking created in the past 12 months.
 
   - name: int_core__check_in_cover_users
-    description: ""
+    description: 
+      This model contains information about hosts that offer check in cover.
+      It has basic information on the users like name, phone, email or joined date.
     columns:
       - name: id_user
         data_type: character varying
-        description: ""
+        description: Unique id value for the user
+        tests:
+          - not_null
+          - unique
 
       - name: last_name
         data_type: character varying
-        description: ""
+        description: Last name of the user
 
       - name: user_name
         data_type: character varying
-        description: ""
+        description: User name of the user
 
       - name: first_name
         data_type: character varying
-        description: ""
+        description: First name of the user
 
       - name: email
         data_type: character varying
-        description: ""
+        description: Email of the user
 
       - name: phone_number
         data_type: character varying
-        description: ""
+        description: Phone number of the user
 
       - name: joined_at_utc
         data_type: timestamp without time zone
-        description: ""
+        description: Date and time the user joined
 
       - name: joined_date_utc
         data_type: date
-        description: ""
+        description: Date the user joined
 
       - name: billing_town
         data_type: character varying