Initial commit: Financial Crime domain exemplar

financial_crime/entities/currency.md

@@ -0,0 +1,52 @@
+# [Financial Crime](../domain.md)
+
+## Entities
+
+### Currency
+
+Currency defines a recognised monetary unit used for account balances and transactions.
+
+```mermaid
+---
+config:
+  layout: elk
+---
+classDiagram
+  class Currency{
+    * Currency Code : string
+    Currency Name : string
+    Minor Unit : integer
+  }
+
+  ExchangeRate "0..*" --> "1" Currency : from
+  ExchangeRate "0..*" --> "1" Currency : to
+
+  class ExchangeRate["<a href='https://github.com/Semprini/md-ddl/blob/main/examples/Financial%20Crime/entities/exchange-rate.md'>Exchange Rate</a>"]
+```
+
+```yaml
+existence: independent
+mutability: reference
+attributes:
+  Currency Code:
+    type: string
+    identifier: primary
+    description: ISO 4217 alphabetic currency code.
+
+  Currency Name:
+    type: string
+    description: Official currency display name.
+
+  Minor Unit:
+    type: integer
+    description: Number of decimal places used for the currency.
+```
+
+```yaml
+governance:
+  retention_basis: Inherited from domain default retention of 10 years post relationship end for AML/CTF record-keeping
+```
+
+## Relationships
+
+No relationships are sourced directly from Currency in the current domain model.