Try example

Author: tautschnig

doc/architectural/central-data-structures.md

@@ -16,10 +16,22 @@ diagram is a simplified view of how the data structures relate to each other -
 
 ```mermaid
 erDiagram
-  goto_modelt {
-    symbol_tablet symbol_table
-    goto_functionst goto_functions
-  }
+    CUSTOMER ||--o{ ORDER : places
+    CUSTOMER {
+        string name
+        string custNumber
+        string sector
+    }
+    ORDER ||--|{ LINE-ITEM : contains
+    ORDER {
+        int orderNumber
+        string deliveryAddress
+    }
+    LINE-ITEM {
+        string productCode
+        int quantity
+        float pricePerUnit
+    }
 ```
 
 A `goto_modelt` is effectively a pair, consisting of: