diff --git a/corepos/db/office_trans/model.py b/corepos/db/office_trans/model.py
index 55aff86..7b6240c 100644
--- a/corepos/db/office_trans/model.py
+++ b/corepos/db/office_trans/model.py
@@ -35,11 +35,10 @@ Base = declarative_base()
 
 
 @six.python_2_unicode_compatible
-class TransactionDetail(Base):
+class TransactionDetailBase(object):
     """
     Represents a POS transaction detail record.
     """
-    __tablename__ = 'dtransactions'
 
     # store
     store_row_id = sa.Column(sa.Integer(), primary_key=True, nullable=False)
@@ -123,3 +122,10 @@ class TransactionDetail(Base):
 
     def __str__(self):
         return self.description or ''
+
+
+class TransactionDetail(TransactionDetailBase, Base):
+    """
+    Represents a POS transaction detail record.
+    """
+    __tablename__ = 'dtransactions'
diff --git a/corepos/db/office_trans_archive/__init__.py b/corepos/db/office_trans_archive/__init__.py
new file mode 100644
index 0000000..e25b200
--- /dev/null
+++ b/corepos/db/office_trans_archive/__init__.py
@@ -0,0 +1,30 @@
+# -*- coding: utf-8; -*-
+################################################################################
+#
+#  pyCOREPOS -- Python Interface to CORE POS
+#  Copyright © 2018-2022 Lance Edgar
+#
+#  This file is part of pyCOREPOS.
+#
+#  pyCOREPOS is free software: you can redistribute it and/or modify it under
+#  the terms of the GNU General Public License as published by the Free
+#  Software Foundation, either version 3 of the License, or (at your option)
+#  any later version.
+#
+#  pyCOREPOS is distributed in the hope that it will be useful, but WITHOUT ANY
+#  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+#  FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+#  details.
+#
+#  You should have received a copy of the GNU General Public License along with
+#  pyCOREPOS.  If not, see <http://www.gnu.org/licenses/>.
+#
+################################################################################
+"""
+"Archive" Transaction Database Interface
+"""
+
+from sqlalchemy import orm
+
+
+Session = orm.sessionmaker()
diff --git a/corepos/db/office_trans_archive/model.py b/corepos/db/office_trans_archive/model.py
new file mode 100644
index 0000000..ce70603
--- /dev/null
+++ b/corepos/db/office_trans_archive/model.py
@@ -0,0 +1,39 @@
+# -*- coding: utf-8; -*-
+################################################################################
+#
+#  pyCOREPOS -- Python Interface to CORE POS
+#  Copyright © 2018-2022 Lance Edgar
+#
+#  This file is part of pyCOREPOS.
+#
+#  pyCOREPOS is free software: you can redistribute it and/or modify it under
+#  the terms of the GNU General Public License as published by the Free
+#  Software Foundation, either version 3 of the License, or (at your option)
+#  any later version.
+#
+#  pyCOREPOS is distributed in the hope that it will be useful, but WITHOUT ANY
+#  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+#  FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+#  details.
+#
+#  You should have received a copy of the GNU General Public License along with
+#  pyCOREPOS.  If not, see <http://www.gnu.org/licenses/>.
+#
+################################################################################
+"""
+CORE POS Transaction Data Model
+"""
+
+from sqlalchemy.ext.declarative import declarative_base
+
+from corepos.db.office_trans.model import TransactionDetailBase
+
+
+Base = declarative_base()
+
+
+class TransactionDetail(TransactionDetailBase, Base):
+    """
+    Represents a POS transaction detail record.
+    """
+    __tablename__ = 'bigArchive'