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diff --git a/networking_sfc/db/migration/alembic_migrations/versions/liberty/expand/5a475fc853e6_ovs_data_model.py b/networking_sfc/db/migration/alembic_migrations/versions/liberty/expand/5a475fc853e6_ovs_data_model.py
new file mode 100644
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+++ b/networking_sfc/db/migration/alembic_migrations/versions/liberty/expand/5a475fc853e6_ovs_data_model.py
@@ -0,0 +1,87 @@
+# Copyright 2015 Futurewei. All rights reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+"""Defining OVS data-model
+
+Revision ID: 5a475fc853e6
+Revises: c3e178d4a985
+Create Date: 2015-09-30 18:00:57.758762
+
+"""
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '5a475fc853e6'
+down_revision = 'c3e178d4a985'
+
+
+def upgrade():
+    op.create_table('sfc_portpair_details',
+        sa.Column('tenant_id', sa.String(length=255), nullable=True),
+        sa.Column('id', sa.String(length=36), nullable=False),
+        sa.Column('ingress', sa.String(length=36), nullable=True),
+        sa.Column('egress', sa.String(length=36), nullable=True),
+        sa.Column('host_id', sa.String(length=255), nullable=False),
+        sa.Column('mac_address', sa.String(length=32), nullable=False),
+        sa.Column('network_type', sa.String(length=8), nullable=True),
+        sa.Column('segment_id', sa.Integer(), nullable=True),
+        sa.Column('local_endpoint', sa.String(length=64), nullable=False),
+        sa.PrimaryKeyConstraint('id')
+    )
+
+    op.create_index(
+        op.f('ix_sfc_portpair_details_tenant_id'),
+        'sfc_portpair_details', ['tenant_id'], unique=False
+    )
+    op.create_table('sfc_uuid_intid_associations',
+        sa.Column('id', sa.String(length=36), nullable=False),
+        sa.Column('uuid', sa.String(length=36), nullable=False),
+        sa.Column('intid', sa.Integer(), nullable=False),
+        sa.Column('type_', sa.String(length=32), nullable=False),
+        sa.PrimaryKeyConstraint('id', 'uuid'),
+        sa.UniqueConstraint('intid')
+    )
+
+    op.create_table('sfc_path_nodes',
+        sa.Column('tenant_id', sa.String(length=255), nullable=True),
+        sa.Column('id', sa.String(length=36), nullable=False),
+        sa.Column('nsp', sa.Integer(), nullable=False),
+        sa.Column('nsi', sa.Integer(), nullable=False),
+        sa.Column('node_type', sa.String(length=32), nullable=True),
+        sa.Column('portchain_id', sa.String(length=255), nullable=True),
+        sa.Column('status', sa.String(length=32), nullable=True),
+        sa.Column('next_group_id', sa.Integer(), nullable=True),
+        sa.Column('next_hop', sa.String(length=512), nullable=True),
+        sa.ForeignKeyConstraint(['portchain_id'], ['sfc_port_chains.id'],
+                                ondelete='CASCADE'),
+        sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(
+        op.f('ix_sfc_path_nodes_tenant_id'),
+        'sfc_path_nodes', ['tenant_id'], unique=False
+    )
+
+    op.create_table('sfc_path_port_associations',
+        sa.Column('pathnode_id', sa.String(length=36), nullable=False),
+        sa.Column('portpair_id', sa.String(length=36), nullable=False),
+        sa.Column('weight', sa.Integer(), nullable=False),
+        sa.ForeignKeyConstraint(['pathnode_id'], ['sfc_path_nodes.id'],
+                                ondelete='CASCADE'),
+        sa.ForeignKeyConstraint(['portpair_id'], ['sfc_portpair_details.id'],
+                                ondelete='CASCADE'),
+        sa.PrimaryKeyConstraint('pathnode_id', 'portpair_id')
+    )