Created dim_members sql and yml and a singular test.

models/marts/dim_members.sql

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+with members as (
+
+    select *
+    from {{ ref('stg_members') }}
+
+),
+
+final as (
+
+    select 
+        member_id,
+        first_name,
+        last_name,
+        email,
+        missing_email_flag,
+        date_of_birth,
+        join_date,
+        membership_status,
+        home_club
+    from members
+
+)
+
+select *
+from final

models/marts/dim_members.yml

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+version: 2
+
+models: 
+  - name: dim_members
+    description: Final member dimension with one row per member and cleaned descriptive attributes.
+
+    columns: 
+      - name: member_id
+        description: Unique identifier for each member.
+        tests:
+          - not_null
+          - unique
+
+      - name: first_name
+        description: Members first name.
+        tests:
+          - not_null
+
+      - name: last_name
+        description: Members last name.
+        tests:
+          - not_null
+
+      - name: email
+        description: Members email address, null if missing. 
+
+      - name: missing_email_flag
+        description: Flag indicating whether the member is missing an email address. 
+        tests:
+          - not_null
+          - accepted_values:
+              arguments:
+                values: [true, false]
+                quote: false
+
+      - name: date_of_birth
+        description: Members date of birth.
+        tests: 
+          - not_null
+
+      - name: join_date
+        description: Date the member joined.
+        tests: 
+          - not_null
+
+      - name: membership_status
+        description: Cleaned membership status. 
+        tests:
+          - not_null
+          - accepted_values:
+              arguments:
+                values: ['active', 'inactive', 'unknown']
+
+      - name: home_club
+        description: Location of members home club.
+        tests:
+          - not_null
+          - accepted_values:
+              arguments:
+                values: ['Bow', 'Canary Wharf', 'Hackney', 'Stratford']

tests/singular_tests/dim_members_join_date_after_birth_date.sql

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+select *
+from {{ ref('dim_members') }}
+where join_date < date_of_birth