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diff --git a/sql/datadict.h b/sql/datadict.h
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+#ifndef DATADICT_INCLUDED
+#define DATADICT_INCLUDED
+/* Copyright (c) 2010, Oracle and/or its affiliates.
+   Copyright (c) 2017 MariaDB corporation.
+
+   This program 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; version 2 of the License.
+
+   This program 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 this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335  USA */
+
+#include "handler.h"
+
+/*
+  Data dictionary API.
+*/
+
+enum Table_type
+{
+  TABLE_TYPE_UNKNOWN,
+  TABLE_TYPE_NORMAL,                            /* Normal table */
+  TABLE_TYPE_SEQUENCE,
+  TABLE_TYPE_VIEW
+};
+
+/*
+  Take extra care when using dd_frm_type() - it only checks the .frm file,
+  and it won't work for any engine that supports discovery.
+
+  Prefer to use ha_table_exists() instead.
+  To check whether it's an frm of a view, use dd_frm_is_view().
+*/
+
+enum Table_type dd_frm_type(THD *thd, char *path, LEX_CSTRING *engine_name);
+
+static inline bool dd_frm_is_view(THD *thd, char *path)
+{
+  return dd_frm_type(thd, path, NULL) == TABLE_TYPE_VIEW;
+}
+
+bool dd_recreate_table(THD *thd, const char *db, const char *table_name);
+
+#endif // DATADICT_INCLUDED