diff --git a/dynamicannotationdb/annotation.py b/dynamicannotationdb/annotation.py
index 53c8aa8..418670e 100644
--- a/dynamicannotationdb/annotation.py
+++ b/dynamicannotationdb/annotation.py
@@ -55,6 +55,7 @@ def create_table(
         with_crud_columns: bool = True,
         read_permission: str = "PUBLIC",
         write_permission: str = "PRIVATE",
+        keep_created_ts_col: bool = False,
         notice_text: str = None,
     ):
         r"""Create new annotation table unless already exists
@@ -144,6 +145,7 @@ def create_table(
             "read_permission": read_permission,
             "write_permission": write_permission,
             "last_modified": creation_time,
+            "keep_created_ts_col": keep_created_ts_col,
             "notice_text": notice_text,
         }
 
diff --git a/dynamicannotationdb/migration/alembic/versions/4654f43b80f6_add_keep_created_ts_col.py b/dynamicannotationdb/migration/alembic/versions/4654f43b80f6_add_keep_created_ts_col.py
new file mode 100644
index 0000000..b5198f9
--- /dev/null
+++ b/dynamicannotationdb/migration/alembic/versions/4654f43b80f6_add_keep_created_ts_col.py
@@ -0,0 +1,31 @@
+"""Add keep created ts col
+
+Revision ID: 4654f43b80f6
+Revises: 309cf493a1e2
+Create Date: 2023-01-17 17:16:11.658225
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+from sqlalchemy.dialects import postgresql
+
+# revision identifiers, used by Alembic.
+revision = "4654f43b80f6"
+down_revision = "309cf493a1e2"
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.add_column(
+        "annotation_table_metadata",
+        sa.Column("keep_created_ts_col", sa.Boolean(), nullable=True),
+    )
+
+    op.execute("UPDATE annotation_table_metadata SET keep_created_ts_col = False")
+    op.alter_column("annotation_table_metadata", "keep_created_ts_col", nullable=False)
+
+
+def downgrade():
+    op.drop_column("annotation_table_metadata", "keep_created_ts_col")
diff --git a/dynamicannotationdb/migration/migrate.py b/dynamicannotationdb/migration/migrate.py
index 8a423b6..9c61e3b 100644
--- a/dynamicannotationdb/migration/migrate.py
+++ b/dynamicannotationdb/migration/migrate.py
@@ -219,8 +219,11 @@ def apply_cascade_option_to_tables(self, dry_run: bool = True):
                 raise error
         return fkey_mappings
 
-    def add_cascade_delete_to_fkey(self, table: Table, dry_run: bool = True):
-        table_name = table.name
+    def add_cascade_delete_to_fkey(self, table: Table or str, dry_run: bool = True):
+        if isinstance(table, str):
+            table_name = table
+        else:
+            table_name = table.table
         fkeys_to_drop = {}
         fkey_to_add = {}
         for fk in self.target_inspector.get_foreign_keys(table_name):
diff --git a/dynamicannotationdb/models.py b/dynamicannotationdb/models.py
index 23b3a4a..e30054e 100644
--- a/dynamicannotationdb/models.py
+++ b/dynamicannotationdb/models.py
@@ -18,8 +18,6 @@
 from sqlalchemy.orm import relationship
 from sqlalchemy.dialects import postgresql
 
-# Models that will be created in the 'materialized' database.
-MatBase = declarative_base()
 # Models that will be created in the 'annotation' database.
 AnnotationBase = declarative_base()
 
@@ -87,17 +85,6 @@ class VersionErrorTable(Base):
     analysisversion = relationship("AnalysisVersion")
 
 
-class MaterializedMetadata(MatBase):
-    __tablename__ = "materializedmetadata"
-    id = Column(Integer, primary_key=True)
-    schema = Column(String(100), nullable=False)
-    table_name = Column(String(100), nullable=False)
-    row_count = Column(Integer, nullable=False)
-    materialized_timestamp = Column(DateTime, nullable=False)
-    segmentation_source = Column(String(255), nullable=True)
-    is_merged = Column(Boolean, nullable=True)
-
-
 class AnnoMetadata(Base):
     __tablename__ = "annotation_table_metadata"
     id = Column(Integer, primary_key=True)
@@ -123,6 +110,7 @@ class AnnoMetadata(Base):
         nullable=False,
     )
     last_modified = Column(DateTime, nullable=False)
+    keep_created_ts_col = Column(Boolean, nullable=False)
 
 
 class SegmentationMetadata(Base):