now use schemacrawler in conjunction to generate database.mmd as well as erd diagrams

mermaid.py

@@ -0,0 +1,43 @@
+from __future__ import print_function
+import re
+
+def cleanname(name):
+    return re.sub(r'[^\d\w_]', '', name)
+
+def format_table_name(full_name):
+    parts = full_name.split('.')
+    if len(parts) == 2 and not parts[0].endswith('_sandbox'):
+        return cleanname(parts[0] + '_' + parts[1])
+    else:
+        return None
+
+print('erDiagram')
+print('')
+for table in catalog.tables:
+    formatted_name = format_table_name(table.fullName)
+    if formatted_name:
+        print('  ' + formatted_name + ' {')
+        for column in table.columns:
+            print('    ' + cleanname(column.columnDataType.name) + ' ' + cleanname(column.name),
+                  end='')
+            if column.isPartOfPrimaryKey():
+                print(' PK', end='')
+            elif column.isPartOfForeignKey():
+                print(' FK', end='')
+            elif column.isPartOfUniqueIndex():
+                print(' UK', end='')
+            if column.hasRemarks():
+                print(' "' + ' '.join(column.remarks.splitlines()) + '"',
+                      end='')
+            print()
+        print('  }')
+        print('')
+
+for table in catalog.tables:
+    formatted_name = format_table_name(table.fullName)
+    if formatted_name:
+        for childTable in table.referencingTables:
+            child_formatted_name = format_table_name(childTable.fullName)
+            if child_formatted_name:
+                print('  ' + formatted_name + ' ||--o{ ' +
+                      child_formatted_name + ' : "foreign key"')