Initial commit: Financial Crime domain exemplar

financial_crime/entities/branch.md

@@ -0,0 +1,75 @@
+# [Financial Crime](../domain.md)
+
+## Entities
+
+### Branch
+
+A Branch is an operational location responsible for servicing accounts and branch-mediated transactions.
+
+```mermaid
+---
+config:
+  layout: elk
+---
+classDiagram
+  class Branch{
+    * Branch Identifier : string
+    Branch Code : string
+    Branch Name : string
+  }
+
+  Branch "1" --> "0..*" Account : services
+
+  class Account["<a href='https://github.com/Semprini/md-ddl/blob/main/examples/Financial%20Crime/entities/account.md'>Account</a>"]
+```
+
+```yaml
+existence: independent
+mutability: reference
+attributes:
+  Branch Identifier:
+    type: string
+    identifier: primary
+    description: Unique identifier for the branch location.
+
+  Branch Code:
+    type: string
+    description: Operational code used to identify the branch.
+
+  Branch Name:
+    type: string
+    description: Human-readable branch name.
+```
+
+```yaml
+governance:
+  retention_basis: Inherited from domain default retention of 10 years post relationship end for AML/CTF record-keeping
+```
+
+## Relationships
+
+### Branch Services Account
+
+A Branch services one or more Accounts.
+
+```yaml
+source: Branch
+type: has
+target: Account
+cardinality: one-to-many
+granularity: atomic
+ownership: Branch
+```
+
+### Branch Transaction Summary
+
+A Branch has a grouped relationship to Transactions processed through its serviced Accounts. This supports branch-level aggregated reporting for fraud pattern analysis.
+
+```yaml
+source: Branch
+type: associates_with
+target: Transaction
+cardinality: one-to-many
+granularity: group
+ownership: Branch
+```